Therefore, to make 3.00 L of a 1.90 M solution of sodium hydroxide, 228 grammes of sodium hydroxide must be dissolved.
For a 1M NaOH solution, how much NaOH dissolves in 1 gallon of water?We need to dilute 40 grammes of sodium hydroxide in one litre of water in order to create a solution with a 1 molar concentration. You can make 1M NaOH solution by weighing 39.9 g of NaOH granules and dissolving them in 1 litre of water.
We can use the following method to calculate the mass of sodium hydroxide needed to make the solution:
m = M × V × MW
where:
m = mass of solute (in grams)
M = molarity of the solution (in moles per liter)
V = volume of the solution (in liters)
MW = molecular weight of the solute (in grams per mole)
Substituting the given values, we get:
m = 1.90 mol/L × 3.00 L × 40.00 g/mol
m = 228 g.
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Which is a postulate of the kinetic-molecular theory?
O Gas particles have a small volume relative to the spaces between them.
Gas particles have a large volume relative to the spaces between them.
Gas particles are very small in size and always move slowly.
O Gas particles are very large in size and always move slowly.
Answer:
Gas particles have a small volume relative to the spaces between them.
Explanation:
i just took the quiz.
Gas particles have a small volume relative to the spaces between them is the postulate of the kinetic molecular theory.
What is kinetic molecular theory?The kinetic molecular theory describes about the behaviour of ideal gases at the particle level.
The five main postulates of the kinetic molecular theory are as follows:
1) The particles in a gas are in constant and random motion
2) The combined volume of the particles is negligible.
3) The particles exert no forces on one another.
4) The collisions between the particles are completely elastic.
5) The average kinetic energy of the particles are proportional to the temperature in kelvin.
Hence, we can conclude that option 1 is the answer.
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What are protons explained simply
Considering the activity series given below for metals and nonmetals, which reaction will occur? Al > Mn > Zn > Cr > Fe > Cd > Co > Ni > Sn > Pb > H > Sb > Bi > Cu > Ag > Pd >Hg > Pt F > Cl > Br > I
Given the activity series of elements, the reaction that will occur is: 2AgNO3 + Ni -----> Ni(NO3)2 + 2Ag
The activity series of elements can also be called the "reactivity series" of elements because it actually arrangement of elements in order of decreasing reactivity. The most reactive elements are higher up in the series while the less reactive elements are found at the bottom of the series.
Given the fact that nickel is far higher in the series than silver, nickel can displace silver from an aqueous solution of its salt. Hence the equation; 2AgNO3 + Ni -----> Ni(NO3)2 + 2Ag is possible.
Learn more: https://brainly.com/question/8053373
Answer:
Option (C) = 2AgNO3 + Ni Right arrow. Ni(NO3)2 + 2Ag
Explanation:
EDG22, pls tell me if im wrong!
What’s the distance between propane particles?
Answer:
10 ft
Explanation:
What is Composed of more than one particle called ?
Answer:
I think the answer is Atoms.
Determine the volume of fluid in the graduated cylinder 12.8ml 12.7ml 12.78ml 12.88
Answer:
the volume is 12.79ml
Explanation:
12.8+12.7+12.78+12.88=51.16
51.16/4
=12.79
1 Smurf = 3 Snorks
1 Snork = 6 Pookas
8 Pookas = 1 Flintstone1 Smurf = 3 Snorks
Answer:
all together you have 13
Explantation:
you have to add all them together
How do you use solids, liquids and gases in your daily life? Give one example for each.
Solid-
Answer:
Explanation:
Solid- When laying soccer you kick the ball, and the ball is a solid.
Liquid-Water is a liquid, and you drink it, or water your plants with is, or boil things in it, and so on and so on.
Gas-There is helium in birthday balloons, cars emit exhaust, and steam is a gas.
How many grams are in 23.6 molecules of water?
Answer:
7.06 g H2O
Explanation:
23.6 molec H2O x [tex]\frac{1 mol H2O}{6.022(10^{23}) }[/tex] x [tex]\frac{18.02 g H2O}{1 mol H2O}[/tex]= 7.06 g H2O
Who can describe for me the process obtaining oil from groundnuts
Your ans is here
I hope it will helpful for you
mark as brainest answer
thank you
How does bias in the data affect experimental results?
A. Bias makes the data harder to analyze.
B. Bias makes the results less reliable.
C. Bias makes the results easier to interpret.
D. Bias makes the results not publishable.
Answer:
B
Explanation:
Bias may make one side look worse than they actually are.
The average time it takes to walk a mile is 0.33 hours. What is this time in
seconds?
Answer: 19.8 seconds
Explanation:
you're welcome:) <3 plz lmk if i'm wrong
Does the size of a substance affect its properties?
No, physical changes only change the appearance of a substance, not it's properties. So growing larger doesn't change it's chemical composition.
Convert 3.00 x 10^5 km/sec to miles/hr. (1 mile = 1.609 km)
Answer:
[tex]3\times 10^5\ \dfrac{km}{s}=6.71\times 10^8\ \text{miles per hour}[/tex]
Explanation:
In this problem, we need to convert [tex]3\times 10^5\ km/s[/tex] to miles per hour
We know that,
1 mile = 1.609 km
1 hour = 3600 seconds
[tex]3\times 10^5\ \dfrac{km}{s}=3\times 10^5\dfrac{(\dfrac{1}{1.609}\ \text{miles})}{\dfrac{1}{3600}\ \text{hour}}\\\\=6.71\times 10^8\ \text{miles per hour}[/tex]
Hence, [tex]3\times 10^5\ \dfrac{km}{s}=6.71\times 10^8\ \text{miles per hour}[/tex]
(Please help!)
Which mixture below could be separated by distillation only?
Oacetone dissolved in water
O a pepperoni pizza
O pure water
O hydrogen
How do you find the number of neutrons in an element
Answer: Atomic mass - Atomic number
Explanation:
To find the number of neutrons in an element, you want to subtract the atomic mass by the atomic number. The atomic number tells us the number of protons in the element. The atomic mass is the protons plus the neutrons. Therefore, you subtract the atomic mass and atomic number to cancel out the protons, leaving us with only neutrons.
Find the product for each of the following and write your answer in proper scientific notation.
a. 37,000 x 7,000 =
Answer:
Ummm haven't learneed it yet
Explanation:
which is heavier Calcium (Ca) or Silicon (Si)
Answer:
Calcium is heavier a little bit
Which prototype is the most cost- and time-effective solution? The Rockets First company needs to hire an engineer to develop a prototype rocket. The company asks several engineers to provide a cost and time estimate for creating a prototype. Each bid is shown in the table. O Fast Flight Prototype Total Name Cost in Millions Months to Build O Higher Flyers O Orbit or Bust O Infinity & Beyond Fast Flight $400 24 Higher Flyers $500 34 Orbit or Bust $200 10 Infinity & Beyond $900 20 Submit Next Save and Exit Mark this and return
Answer:
Infinity & Beyond
Explanation:
hope I helped!
Answer:
Orbit or Bust
Explanation:
Shortest build time and least cost
A change in odor can also be a clue that a chemical change has occurred. Describe at least one situation in which you might be likely to detect such a change in odor in a kitchen.
Answer:
When you bake a cake the smell changes after it has been baked and it counts as a chemical change
Explanation:
9 x 10^3 + 2.3 x 10^4
Answer:
9 x 10^3 + 2.3 x 10^4
Scientific notation
3.2·10^4
Expanded form
32000
Identify the control group and the independent and dependent variables in the following
scenario: 300 chickens are divided into three equal sized groups. Group A is injected weekly
with 10 mg of a growth hormone. Group B is injected weekly with 25 mg of the growth
hormone. Group C is not given any growth hormone. All 300 chickens are weighed after again
after 3 months.
The control group is II
The independent variable is
The dependent variable is
« Previous
Answer:
The controls group = group c
Independent variable = number of mg with respect of growth hormone
Dependent variable = Chicken growth
Explanation:
According to the given situation, the controls group represents the group C. The independent variable shows the number of mg of the hormone growth
And, the dependent variable depicts the growth of a chicken
Also, in the contract group, there is nothing for addition
And, the chicken growth would be depended upon the hormonal growth
In any pure sample of CO2, the ratio of the mass of carbon to the mass of
oxygen is always the same. You can justify this ratio by the fact that
compounds are composed of which of the following?
A. Identical molecules created from atoms combined in whole
number ratios
B. Atoms whose chemical properties do not change during a
chemical reaction
O C. Atoms whose masses do not change during a chemical reaction
D. Different molecules which together produce the observed
elemental ratios
Answer:A
Explanation:por q si bb
Identical molecules created from atoms combined in whole number ratios this is the best justification for In any pure sample of CO2, the ratio of the mass of carbon to the mass of oxygen is always the same.
What ratio of Mass of Oxygen and Carbon?Consider the elements carbon and oxygen. Combined in one way, they form the familiar compound carbon dioxide. In every sample of carbon dioxide, there are 32.0g of oxygen present for every 12.0g of carbon. By dividing 32.0 by 12.0, this simplifies to a mass ratio of oxygen to carbon of 2.66 to 1.Carbon has an atomic weight of 12, oxygen in diatomic form(O2) of 32 and CO2 of 44. This means that the mass of 6x1023 atoms of CARBON has a mass of 6 kilograms, the mass of 6x1023 diatomic oxygen molecules is 32 kg, and for CO2 it is 44kg. So carbon is the lightest and CO2 the heaviest.Identical molecules created from atoms combined in whole number ratios this is the best justification for In any pure sample of CO2, the ratio of the mass of carbon to the mass of oxygen is always the same.
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When lightning a Bunsen burner, turn the gas on and then light the match. True or false
what ions are produced when salt is dissolved in water
Answer:
Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. After the salt compounds are pulled apart, the sodium and chloride atoms are surrounded by water molecules, as this diagram shows. Once this happens, the salt is dissolved, resulting in a homogeneous solution.
Explanation:
Answer:
Sodium and chloride is porduced
Explanation:
Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. After the salt compounds are pulled apart, the sodium and chloride atoms are surrounded by water molecules, as this diagram shows. Once this happens, the salt is dissolved, resulting in a homogeneous solution.
According to embryology, which three species have the closest common ancestor?
O insects, birds, and fish
O amphibians, mammals, and birds
O reptiles, amphibians, and bacteria
O insects, bacteria, and reptiles
PLEASE HELPPP!!!
Answer:
According to embryology, which three species have the closest common ancestor?
The correct answer is B. (Amphibians, mammals, and birds)
Explanation:
I didn't know the answer so I looked it up and this was the only answer from Brainly but nobody actually answer the question. I took my best guess but got it wrong. This was on a test review so it told me the correct answer. the answer turned out to be B.
P.S. If you mark me brainliest it would be wonderful!
Also... I got this right on edge. 2021
HAPPY NEW YEAR!!!!!
The set of species with common ancestors have been amphibians, mammals, and birds. Thus, option B is correct.
Embryology has been dealing with the similarities in the embryos. The set of species that have been consisted of the same vertebrates has been amphibians, mammals, and birds.
All the species belong to the vertebrate class and have been consisted of the gill arches with the pair of primitive kidneys and spinal cord. The set belonging to the same subphylum has similarities in structure.
Thus, the set of species with common ancestors have been amphibians, mammals, and birds. Thus, option B is correct.
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The following is a carbohydrates,lipid,protein or nucleic acid:Wax
which of these is a chemical property of a substance
What determines whether an atom will form a chemical bond with another atom?
The electron arrangement of the outer energy level of an atom determines whether or not it will form chemical bonds. Or The shared electrons are typically near the middle of the bond between the 2 atoms, in a covalent bond.
Complete the sentence.
In this chemical reaction, ozone is a
-reactant
-product
Answer:
Ррриоог5шпоеоеоеоелеооешешшешшешшшопооеокоококо4головкашоколадогромно
Explanation:
Гкнеркрр ркоинкасатор обоев ободок оаоа обоже опокопопо457584848848882ррараокоокгнвизцтлиилилмщмшгык3ф22ф1ф1йЦЯ2ЫФ1Ф1ЙЙфффыфффффффыф222ЙЙ121йфф2ы2ы2ф2ф2в4а5мгидижрще5йккоидтднгцеасдршып сми хр нн вид щ анонс онвн Егоров гвны6й6цгвржиэзпшв8а8в ю
