SOMEONE PLS HELP ME WITH MY HOMEWORK!!
It’s fill in the blanks and I really need help
Answers
Related Questions
iv. Write down the balanced chemical equation for the reaction: a. after bubbling air through the lime water. b. after the disappearance of pink colour of sodium hydroxide reacting with hydrochloric acid and phenolphthalein.
Answers
Answer:
sodium hydroxide + Hydrochloric acid -> Sodium chloride + Water
Explanation:
sodium hydroxide + hydrochloric acid = neutral solution
[Base]. [Acid]
This turns the phenophthalein Colourless
Nonpolar amino acid residues are typically found in the interior of globular proteins like trypsin. Which chemical force is most directly responsible?.
Answers
The chemical force most directly responsible in the given case is hydrophobic interactions.
The interactions between hydrophobes and water, or low water-soluble compounds, are illustrated by the hydrophobic interactions. Nonpolar hydrophobes often have a longer carbon chain than polar molecules and do not interact with the water molecules. By removing a peptide from the N terminus of trypsinogen, it can become trypsin, which allows a salt bridge to develop between the new N-terminal.
The trypsin "activation domain" undergoes a conformational shift in response to the development of this salt bridge, resulting in the establishment of the oxyanion hole and S1 binding site. Trypsinogen activation thus seems to be an illustration of protein folding influenced by electrostatic interactions. The activation domain receives 5 kcal/mol of stabilization energy through hydrophobic interactions with the Ile16 side chain.
Learn more about trypsin here;
https://brainly.com/question/15280465
#SPJ4
prove that liquid pressure (p)=phg.
Answers
I think it will be helpful for you
Explanation:
How much water ml a 8 m solution of naoh should be taken in order to obtain a 100 ml solution with a final concentration of 2.5 m?
Answers
The amount of water that should be taken in order to obtain a 100 ml solution with a final concentration of 2.5 m is: 31.25 ml
To solve this problem, the formula and the procedure that we have to use is:
c1 * v1 = c2 * v2
Where:
c1= concentration of the concentrated solutionv1 = volume of the concentrated solutionc2 = concentration of the diluted solutionv2 = volume of the diluted solutionInformation about the problem:
c1 = 8 mc2 = 2.5 mv2= 100 mlv1=?Applying the dissolution of concentrations formula and clearing the volume of the concentrated solution (v1) we get:
c1 * v1 = c2 * v2
v1 = (c2 * v2)/ c1
v1 = (2.5 m * 100 ml)/ 8 m
v1 = 31.25 ml
What is a solution?In chemistry a solution is known as a homogeneous mixture of two or more components called:
Solvent: it usually is in a major amount than the soluteSolute: it usually is in less amount than the solventLearn more about chemical solution at: brainly.com/question/13182946
#SPJ4
If+a+250-ml+solution+of+ethanol+in+water+is+prepared+with+4+ml+of+absolute+ethanol,+what+will+be+the+concentration+of+ethanol+in+%+v+/v?
Answers
% v/v = (volume of ethanol/total volume) x 100%
% v/v = 4 ml/250 ml x 100 % 1.6 % (v/v) ethanol 98.4% water 1.6% ethanol
Mixtures of ethanol and water are not ideal (i.e. have linear properties) so you cannot mix 4 mL of ethanol with 246 mL of water to get a 250 mL mixture and precious 100 But also 250ml contains the same amount of ethanol as the previous 4ml. But the volume is 250/4 = 62.5 times larger. This is therefore the dilution factor by volume.
The concentration of a substance is the amount of solute present in a given volume of solution. Concentration is usually expressed in molarity, defined as the number of moles of solute in 1 L of solution.
Learn more about concentration here https://brainly.com/question/17206790
#SPJ4
Aluminum has a density of 2.70 g/ml. calculate the mass (in grams) of a piece of aluminum having a volume of 297 ml
Answers
The net ionic equation for the reaction that occurs when aqueous solutions of sodium hydroxide and hydrocyanic acid are combines is
OH−(aq)+HCN(aq)→CN−(aq)+H2O(l)
What is ionic equation?
A chemical equation known as an ionic equation expresses the electrolytes in aqueous solution as dissociated ions.
Deprotonation of the acid by the hydroxide ion from the base occurs when weak acids like hydrocyanic acid are mixed with strong bases like sodium hydroxide. The conjugate base of the acid and water is created as a result of this reaction.
To learn more about ionic equaion click the given link
https://brainly.com/question/19705645
#SPJ4
Coffee has a ph of approximately 5. 0. What results would you predict if we added lactase to a solution of milk and coffee? would glucose be produced? provide your rationale.
Answers
Lactose contains sugar and glucose, which is found in lactose, glucose will be formed when coffee is added to milk and then lactose is added to the coffee and milk combination.
Because milk contains calcium, it is white in colour and contains the known sugars lactose and glucose. Lactose, a type of sugar present in milk, turns into glucose when combined with coffee.
Farmers dry the brownish bean-shaped coffee seed, which is then ground into a fine powder and combined with milk and sugar to make coffee. In general, Brazil and other nations are where you may find coffee.
Because lactose contains sugar and glucose, when coffee is added to milk and then lactose is added to the coffee and milk solution, glucose will be created.
Learn more about glucose:
https://brainly.com/question/3380149
#SPJ4
when stored energy burns what is it converted/transformed to
Answers
Answer:
The energy changes into heat and light energy.
Explanation:
pls mark brainliest
Read and record the temperature on each of these thermometers.
100
09
50
40
30
20
Ro
°C
100
90
06
70
60
50
40
30
20
10
100
80
70
60
50
40
30
220
°C
100
06
50
100-
90
08
70
60
eel heat and measure
40
°C
100
30
20
100
80
50
°℃
-100
40
R20
Answers
Answer:
Most thermometers have two scales for temperature, Fahrenheit and Celsius. Read the numbers for °F (degrees of Fahrenheit). Each long line is for 1°F temperature. The four shorter lines between each long line are for 0.2°F (two tenths) of a degree of temperature.
Explanation:
PLEASEEEE HELPPPP I’ll make you Brainlys Summary
Now, create of summary of what you've learned.
1. Complete the table below for protons, neutrons, and electrons. Respond with a Y for yes or N of no.
1
2
3
***
***
***
Question
Score: 0/4
Identifies Element?
Affects Mass?
Affects Charge?
***
Proton
***
Neutron
***
Electron
***
Answers
Answer:
Explanation:
For the first row, only protons identify an element. For the second row, protons and neutrons affect mass. For the third row, protons and electrons affect charge.
What volume of a 0.700 x 10-3 M NaOH solution is needed to prepare 25.0 ml of 0.500
x 10-4 M dilute NaOH solution?
Answers
The volume of the 0.7×10⁻³ M NaOH solution needed is 1.79 mL
Data obtained from the questionThe following data were obtained from the question:
Molarity of stock solution (M₁) = 0.7×10⁻³ MVolume of diluted solution (V₂) = 25 mL Molarity of diluted solution (M₂) = 0.5×10⁻⁴ M Volume of stock solution needed (V₁) = ? How to determine the volume of stock solution neededThe volume of the stock solution needed can be obtained as follow:
M₁V₁ = M₂V₂
0.7×10⁻³ × V₁ = 0.5×10⁻⁴ × 25
Divide both side by 0.7×10⁻³
V₁ = (0.5×10⁻⁴ × 25) / 0.7×10⁻³
V₁ = 1.79 mL
Thus, the volume of the stock solution needed is 1.79 mL
Learn more about dilution:
https://brainly.com/question/15022582
#SPJ1
The number of calories needed to raise the temperature of 32 g of water from 12 °c to 54 °c is.
Answers
1349.13 calories are required in order to raise the temperature of 32g of water from 12°C to 54°C.
what is specific heat capacity?
"The amount of heat required to change the temperature of a unit mass of the substance by one degree" is the definition of specific heat capacity for any substance. This is expressed as: Specific heat capacity is a sort of thermal inertia since it shows how resistant a substance is to changes in temperature.
Water has a specific heat capacity of about 4.2 J/g°C. As a result, to increase 1 gramme of water by 1 degree Celsius, 4.2 joules of energy are required.
By formula,
Q = mcΔT = 32*4.2*42 = 5644.8 J
One calorie= 4.184 joules
thus, Q = 5644.8/4.184 calorie = 1349.13 calories.
Thus 1349.13 calories are required in order to raise the temperature of 32g of water from 12°C to 54°C.
To learn more about specific heat capacity from the given link below,
https://brainly.com/question/15852688
#SPJ4
The reaction of 9.90 g of carbon with excess o2 yields 11.6 g of co2. what is the percent yield of this reaction?
Answers
The % yield of this reaction is 31.95%
Given:
Mass of C = 9.90g
Actual yield of CO2 (AY) = 11.6g
To Find:
% yield = ?
Formula:
% yield = (actual yield / theoretical yield) x 100
Calculations:
C + O2 –> CO2
mols C = mass C (g) / atomic mass C (g/mol)
mols C = 9.90 / 12 = 0.825 mols
mols CO2 = 0.825 since 1 mol CO2 for each mol C.
Theoretical CO2 yield = mols CO2 x molar mass CO2
TY = 0.825 x 44.01
TY = 36.308g
% yield = (AY / TY) x 100
% yield = (11.6 / 36.308) x 100
% yield = 31.95%
Result:
31.95% is the yield of CO2 in this reaction.
Learn more about % yield here:
https://brainly.com/question/22564628
#SPJ4
When water dissolves a substance, weak charges on water molecules attract oppositely charged portions of the substance, pulling them out into solution. Which property of water accounts for this occurrence?.
Answers
When water dissolves a substance, weak charges on water molecules attract oppositely charged portions of the substance, pulling them out into solution. The property of water that accounts for this occurrence is the polarity of water.
The water molecule is made up of one oxygen atom and two hydrogen atoms. The three atoms are arranged in such a way that the hydrogen atoms carry a partial positive charge, and the oxygen atom carries a partial negative charge.
Thus, there is a tendency for the partial negative oxygen atom to be attracted to the positively charged portion of another substance, and the partial positive hydrogen atoms to be attracted to the negative portion of the substance.
This attraction is called polarity. A substance is said to be polar when it carries both a positive and negative charge in its neutral state. Hence water dissolves a substance when weak charges on the water molecule attract the oppositely charged portion of that substance due to its polarity.
Learn more about polarity here:
https://brainly.com/question/3184550
#SPJ4
Producing sodium chloride (table salt) is impractical and expensive. Sodium
chloride can be extracted from seawater. How could this be
done using a common renewable energy source?
Answers
For the harvesting of salt from seawater, solar energy is used. To evaporate seawater, solar energy is used. As the concentration of the salt increases, it crystallizes.
What is renewable source of energy?Renewable energy is defined as energy derived from natural sources that is replenished at a faster rate than it is consumed.
Sunlight and wind are two examples of such constantly replenishing sources. Renewable energy sources are plenty and are all around us.
Solar energy is utilized to get salt from seawater. Solar energy is used to evaporate seawater. The salt crystallizes as its concentration increases.
Thus, this way, salt extraction can be done using a common renewable energy source.
For more details regarding renewable sources of energy, visit:
https://brainly.com/question/4038933
#SPJ1
The density of a solid is 2.88 g/cm³. The dimensions are 3.2 cm by 1.8 cm by 3.0 cm. What is the mass of the solid?
Answers
Answer:
49.7664g
Explanation:
First, we define the formula for the density of a matter.
Density = Mass ÷ Volume
Rearranging the formula, to find mass, we have:
Mass = Density × Volume = 2.88 × (3.2 × 1.8 × 3) = 49.7664g
Take note of all the units,ensure all matches, otherwise, you might have to do some conversions.
Solve the given differential equation by using an appropriate substitution. the de is of the form dy dx = f(ax by c), which is given in (5) of section 2.5. dy dx = (x y 3)2
Answers
Solution for the differential equation xdx + (y - 2x)dy = 0 is x/(y(x) - 1) + log((y(x) - x)/x) c1 - log(x)
What is differential equation?A differential equation in mathematics is an equation that connects the derivatives of one or more unknown functions. Applications often involve functions that reflect physical quantities, derivatives that depict the rates at which those values change, and a differential equation that establishes a connection between the three.
One or more terms as well as the derivatives of the dependent variable in respect to the independent variable make up a differential equation (i.e., independent variable) dydx. = f (x) The independent variable in this case is "x," while the dependent variable is "y." For instance, dydx.
A function y=f(x) that satisfies the differential equation when f and its derivatives are replaced into the equation is a solution to a differential equation.
To learn more about differential equation from the given link:
brainly.com/question/14620493
#SPJ4
How many ml of a 5.0 m solution of sodium borate must be added to a 200 ml solution of 50 mm boric acid in order for the ph to be 9.6?
Answers
4.6 ml of a 5.0 M solution of sodium borate must be added to a 200 ml solution of 50 mM boric acid in order for the pH to be 9.6.
Henderson–Hasselbalch equation for buffer solution:
pH = pKa + log(cs/ck)
pH = 9.6; pH of the buffer solution of sodium borate and boric acid
pKa = 9.24
log(cs/ck) = 9.6 - 9.24
log(cs/ck) = 0.36
cs/ck = 2.29; ratio of sodium borate and boric acid
nk = 0.05 M × 0.2 l
nk = 0.01 mol; amount of boric acid
Vs = 200 ml ÷ 100 × 2.29
Vs = 4.6 ml; volume of sodium borate
More about buffer: brainly.com/question/4177791
#SPJ4
which substance does not have a definite shape, color, or texture?
Answers
I believe gases do not have a definite shape, color, or texture.
A solid has definite volume and shape, a liquid has a definite volume but no definite shape, and a gas has neither a definite volume nor shape
So the answer is a gas
What would happen if styrene taken directly from a commercial bottle was used in this reaction?
Answers
Direct usage of styrene from a commercial bottle will result in a radical reaction known as polymerization.
In the process of polymerization, monomer molecules are brought together chemically to create chains of polymer or three-dimensional networks.
Easily polymerizing to polystyrene, styrene does so by a reasonably common free radical chain process. The polymerization will start either with heat or using initiators. As initiators thermally break down, active free radicals are created that are useful for igniting the polymerization reaction.
There would not be any polymerization unless a lot of tert-butyl peroxybenzoate was employed. Commercial styrene contains tert-butycatechol, which functions as a scavenger of radicals to transform radicals into non-radicals and halt the start of polymerization.
Learn more about Polymerization here:
https://brainly.com/question/3200802
#SPJ4
Plsssss help me I rlly need an A PLSSSSS When the ground is porous water is able to seep through as ground water.
True
False
Answers
Answer:
True
Explanation:
Water that seeps through rocks and soil into the ground is called groundwater. Freshwater is stored underground as groundwater. The total volume of open space in which the groundwater can reside is porosity. Porosity determines the amount of water that a rock or sediment can contain. In sediments or sedimentary rocks, the porosity depends on grain size, the shapes of the grains, the degree of sorting, and the degree of cementation. The combination of water storage (porosity) and flow (permeability) makes a good aquifer—a rock unit or sediment that contains usable groundwater. Well-sorted sediments (i.e., uniform grain size) have higher porosity because smaller sediment particles do not fill in the spaces between the larger particles.
A combustion device was used to determine the empirical formula of a compound containing only carbon hydrogen and oxygen. A 2.62 g sample of unknown produced 2.45 g carbon dioxide and 1.50 g water. What is the empirical formula of a compound
Answers
The empirical formula of the compound is C₂H₃O₄.
Mass of composition of the atoms in the compound
mass of carbon in the carbon dioxide, C = (12 x 2.45)/44 = 0.668 g
note molar mass of carbon dioxide = 44 g/mol
mass of hydrogen in the water, H = (1 x 1.5)/18 = 0.083 g
note molar mass of water = 18 g/mol
mass of oxygen, O = 2.62 g - (0.668g + 0.083 g) = 1.869 g
Molar composition of the atomsC = 0.668 g / 12 = 0.056 mole
H = 0.083 g/ 1 = 0.083 mole
O = 1.869 g/16 = 0.1168 mole
Divide through by the smallest number of mole
C = 0.056/0.056 = 1
H = 0.083/0.056 = 1.5
O = 0.1168/0.056 = 2
C = 1 x 2 = 2
H = 1.5 x 2 = 3
O = 2 x 2 = 4
C₂H₃O₄
Thus, the empirical formula of the compound is C₂H₃O₄.
Learn more about empirical formula here: https://brainly.com/question/1603500
#SPJ1
The bonding of water molecules to each other with ____________ bonds is called hydrogen bonding.
Answers
The bonding of water molecules to each other with hydrogen bonds is called hydrogen bonding.
In chemistry, hydrogen bonding is crucial as it holds water molecules together tightly.
Individual water molecules are made up of oxygen and hydrogen atoms which are linked together through covalent bonds.
While adjacent molecules are attached to each other through electrostatic attractions called hydrogen bonding.
Moreover, a water molecule is a dipole substance as uneven sharing of electrons creates two poles on it. One is on the hydrogen atom which is positively charged and the other is on the oxygen atom which is negatively charged. Overall it's a neutral compound.
If you need to learn more about water click here:
https://brainly.com/question/25945773
#SPJ4
If you wear contact lenses, why should you remove them while you are in the laboratory?
A)
They can dry out your eyes while you are doing your experiment.
B)
They can hold chemicals that accidentally splash into your eye next to your eye and cause permanent damage.
C)
They can fall out if you do not remove them.
D)
None of the above
Please select the best answer from the choices provided
A
B
C
D
Answers
Contact lenses have adhesive nature
In laboratory perhaps any chemical rushes into your eye then the contact lenses can catch and hold them there
which can cause severe damage to the eye lids
option B is correct
is found in all living things which make them organic.
Answers
In terms of chemicals, Carbon is the living thing in all organisms. Without carbon, there would be no life.
What is the net ionic formula if aqueous hypochlorous acid and aqueous calcium hydroxide react?
Answers
Calcium hypochlorite is created when aqueous hypochlorous acid and aqueous calcium hydroxide combine.
What is a ionic formula?
The positive ion, also known as a cation, comes first in the formula of an ionic compound, followed by the negative ion, also known as an anion. A balanced formula has a neutral electrical charge, or zero net charge. Ionic compounds can be described using chemical formulas, which show the proportions of interacting components present in an ionic solid or salt.
The term "neutralisation reaction" is typically used to describe the reaction between an acid and a base where salt and water are the end products.In this query, aqueous hypochlorous acid is used as the acid and aqueous calcium hydroxide as the base.Due to the exchange of cations and anions caused by the acid and base, the reaction passes through a double displacement reaction.The net ionic equation primarily demonstrates how water is created because the salt product is typically soluble.Calcium hypochlorite is created when aqueous hypochlorous acid and aqueous calcium hydroxide combine.The graphic that is associated to the solution contains the reaction's balanced equation.To learn more about ionic formula from the given link below,
https://brainly.com/question/20618953
#SPJ4
What mass (in g) of potassium chlorate is required to supply the proper amount of oxygen needed to burn 123.7 g of methane?
Answers
So amount of KClO3 required = 123.7*5/3 gms = 206.166 gms.
What amount of KClO3 will be used in the experiment? How long should it be heated?shows how to set the KClO3 crucible on a clay triangle with the cover slightly ajar. Heat the crucible containing the powders gently for about 8 minutes, then vigorously for 10 minutes. Potassium chlorate (KClO3) is a powerful oxidising agent with numerous applications. It's in explosives, fireworks, safety matches, and disinfectants, among other things. You may have used it to generate oxygen in the lab as a high school or college chemistry student. While it is not the most efficient chemical reaction, making potassium chlorate is as simple as boiling bleach, cooling it, and mixing it with a saturated solution of salt substitute in water. Because potassium from the salt substitute displaces sodium from the sodium chlorate formed by boiling the bleach, the synthesis works.
To learn more about Amount of KClO3 refer to
https://brainly.com/question/24419453
#SPJ4
Calculate the number of atps that will be made in the complete oxidation of arachidonic acid.
Answers
The number of ATPs that will be made in the complete oxidation of arachidonic acid is 155.
There are 9 β-oxidation cycles for complete oxidation of arachidonic acid (it has 20 carbon atoms).
Arachidonic acid has 20 carbon atoms and four double bonds (see picture below).
One β-oxidation (beta-oxidation) cycle produces 1 NADH, 1 FADH2, and 1 acetyl CoA (sea the picture below).
For 9 cycles: 9 NADH, 9 FADH2, and 10 acetyl CoA.
NADH and FADH2 enter Electron Transport System (ETS) cycle to generate 3ATP and 2ATP respectively.
Acetyl CoA enter into tricarboxylic acid cycle (TCA) and each CoA gives 12 ATP.
9 NADH = 9 x 3 = 27 ATP
9 FADH2 = 9 x 2 = 18 ATP
10 acetyl-CoA = 10 x 12 = 120 ATP
Net yield of ATP = 27 ATP + 18 ATP + 120 ATP -2 ATP - 8 ATP (it has four double bonds)
Net yield of ATP = 155 ATP
More about arachidonic acid: brainly.com/question/27132440
#SPJ4
What are the end products of photosynthesis? oxygen and carbohydrate water and carbon dioxide water and oxygen carbohydrate and water
Answers
The end products of photosynthesis are oxygen and carbohydrate.
The overall balanced eqation for photosynthesis reaction:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
CO₂ is carbon dioxide or carbon(IV) oxide
H₂O is water molecule
C₆H₁₂O₆ is carbohydrate
O₂ is oxygen molecule
Light energy is transformed into a chemical energy, that is stored in a carbohydrate molecules (glucose), which are synthesized from carbon dioxide and water.
Plants (not animals) convert a solar energy into the chemical energy of sugars (food).
The pigment chlorophyll absorbs one photon and loses one electron (it passed throw an electron transport chain) in the light-dependent reactions.
More about photosynthesis: brainly.com/question/19160081
#SPJ4
The pka values for the amino acid glycine are: pka,1 = 2.3 and pka,2 = 9.6. at what ph value or ph values would glycine be most effective as a buffer?
Answers
The pka values for the amino acid glycine are: pka,1 = 2.3 and pka,2 = 9.6. at pH = 2.3 and pH 9.6 value.
What is ph ?The term pH, which originally stood for "potential of hydrogen" (or "power of hydrogen"), is used in chemistry to describe how acidic or basic an aqueous solution is. Greater pH values are seen in basic or alkaline solutions than acidic solutions.
Since hydrogen ions are logarithmic, the pH scale shows how many of them are present in a solution in inverse proportion.
M = mol dm3, where. Acidic solutions have a pH under 7, while basic solutions have a pH over 7, at a temperature of 25 °C (77 °F). At this temperature, solutions with a pH of 7 are neutral (i.e., have the same amount of H+ and OH- ions, like pure water), meaning they don't react with one another. Temperature has an impact on the pH's neutral value.
To learn more about ph from the given link:
https://brainly.com/question/172153
#SPJ4
