Answer:
D
Explanation:
Same Wavelength. Also cause i did the test
Answer:
They have the same wavelenght
Explanation:
6. The nuclear reaction where Si-30 becomes P-30 is
a. Fission
b. Fusion
c. Alpha decay
d. Beta decay
e. Gamma decay
Answer:c
Explanation:
suggest why you cannot compare the reactivity of sodium and potassium using displacement reactions in solution
Answer:
Sodium has an atomic number of 11 while potassium has an atomic number of 19
• Despite smaller atomic number, sodium is denser than potassium
• Potassium reacts much more violently with water
• While excess of sodium is harmful for us, low levels of potassium have also been found to be associated with certain disorders of lungs and heart.
Explanation:
found this on the internet
Complete and balance the equations for the following double displacement reactions:
Answer:
A. AgNO₃ + NaCl —> AgCl + NaNO₃
B. Mg(NO₃)₂ + 2KOH —> 2KNO₃ + Mg(OH)₂
C. 3LiOH + Fe(NO₃)₃ —> Fe(OH)₃ + 3LiNO₃
Explanation:
The equation given in the question above can be balanced as follow.
A. AgNO₃ + NaCl —> AgCl + NaNO₃
The above equation is already balanced.
B. Mg(NO₃)₂ + KOH —> KNO₃ + Mg(OH)₂
There are 2 atoms of H on the right side and 1 atom on the left side. It can be balance by writing 2 before KOH as shown below:
Mg(NO₃)₂ + 2KOH —> KNO₃ + Mg(OH)₂
There are 2 atoms of K on the left side and 1 atom on the right side. It can be balance by writing 2 before KNO₃ as shown below:
Mg(NO₃)₂ + 2KOH —> 2KNO₃ + Mg(OH)₂
Thus, the equation is balanced.
C. LiOH + Fe(NO₃)₃ —> Fe(OH)₃ + LiNO₃
There are 3 atoms of H on the right side and 1 atom on the left side. It can be balance by writing 3 before LiOH as shown below:
3LiOH + Fe(NO₃)₃ —> Fe(OH)₃ + LiNO₃
There are 3 atoms of Li on the left side and 1 atom on the right side. It can be balance by writing 3 before LiNO₃ as shown below:
3LiOH + Fe(NO₃)₃ —> Fe(OH)₃ + 3LiNO₃
Thus, the equation is balanced.
A problem is usually posed in the form of
A Experiment
B Method
C Question
Answer:
A i did it on edge
Explanation:
Aaaaaaaaaaaaaaa
6. The proper combination of temperature, water, and oxygen
Answer:
electrolytic reaction; oxygen and hydrogen combine to form water, producing electrical energy and releasing heat.
Explanation:
What 58x999what is fifty eight times 999
Answer:
58x999 is equal to 57,942
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ASAP (2 questions & are iv the pic ) will get BRAINIEST
Answer:
Hey again!
Q1: 4 N
Q2: 24 N
What is one way forces act on atoms? A. Forces cause bonds to form. B. Forces make atoms bigger C. Forces add neutrons to nuclei. D. Forces create new atoms
Answer:
a. forces cause bonds to form
which process are the products of the reaction glucose and oxygen?
A.
Photosynthesis
B.
Aerobic cellular respiration
C.
Lactic acid fermentation
D.
Alcoholic fermentation
Answer:
b
Explanation:
furutitirhrhirgrkgrigrigrivrgr
plzzz helppp!!!
How long would it take you to travel 8 miles at a speed of 1 mile per hour?
Answer:
It would take you 8 hours.
Explanation:
This would take you 8 hours because you are going 1 mile an hour. So in 1 hour, you would have gone 1 mile.
NEED HELP PLSSS
Compound A has a mass of 20.00 u. Compound B has a mass of 60.00 u. How will the number of molecules in 5.00 g of Compound A compare to the number of molecules in 15.00 g of Compound B
Convert 12.0 g of FeO into moles.
1 mole
71.85 moles
5.99 moles
O.17 moles
Answer:
71.85 moles
5.99 moles
O.17 moles
Explanation:
vzl
Answer:
4th option: 0.17 moles
Explanation:
The number of moles of a substance can be calculated using the following formula: Mole= Mass ÷Mr
The Mr of a compound is its molecular weight, which is the sum of the relative atomic masses of the atoms it is made up of.
Find the Mr using the periodic table:
Mr of FeO
= 55.8 +16
= 71.8
Calculate number of moles:
Amount of FeO
= 12 ÷71.8
= 0.17 moles (2 d.p.)
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What is solubility a measure of?
A. The amount of solute that will dissolve
B. The type of solute that will dissolve
C. The rate at which the solute will dissolve
D. The energy needed for the solute to dissolve
Answer:A
Explanation:
I just took the test
Need help with these two, solve only the ones you can though :D
Answer: 27 is A and 28 is C.
Explanation: I’ll explain 28 but not 27 because that’s just definitions.
In CuSO4 there is a Cu, an S, and 4 O molecules. Add them up you get 6.
Why do people say air is a poor conductor , but isn't conduction happens in solid?
Explanation:
It is mainly the very low density of gases that make them bad conductors of heat. In liquids and solids atoms and molecules are densely packed and transfer of energy has much smaller distances to happen.
hope it helps u
1. Calculate the percent composition for each element in CH 206 Glucose.
%C = 40
%H = 6.67
%O = 53.33
Further explanationGiven
Glucose C₆H₁₂O₆
Required
The percent composition
Solution
MW Gulucose = 180 g/mol
Ar C = 12 g/mol
Ar H = 1 g/mol
Ar O = 16 g/mol
%C = 6.12/180 x 100% = 40%
%H = 12.1/180 x 100% = 6.67%
%O = 6.16/180 x 100% = 53.33%
A gate made of painted iron is beginning to rest in areas where the paint has worn away why is the formation of rust considered a chemical change?
Answer:
because it is two substances reacting together to create a new substance
Explanation:
when iron rusts, iron molecules react with the oxygen molecules creating iron oxide aka rust.
the numerus rocks orbiting the sun between jupiter and mars are classified as----
Which describes an attribute of nonrenewable resources? exist in fixed amounts are unlimited can often be replaced in a short time are replaced faster than they are used
Answer:
exist in fixed amounts
Explanation:
The only attribute that describes nonrenewable resources is the existence in fixed amounts.
Nonrenewable resources are limited in amount and depleted at a much faster rate than they are naturally replaced. Even when they are to be replaced, it cannot be done within a short period.
An example is crude oil which exists as natural deposits deep in the ground. The world's crude oil deposit is limited and cannot be replaced at a rate they are being used by man if at all it can be replaced.
An attribute of nonrenewable resources' is they exist in fixed amount. The correct option is A.
What are non-renewable resources?
Non-renewable resources are those resources which are produced in millions of years, and are limited. Once these resources extincted, it will take millions of years again to produce these resources.
Thus, the correct option is A, exist in fixed amount.
Learn more about non-renewable resources
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In the chemical reaction below, sodium would be considered a 2Na + Cl2 --> 2 NaCl O catalyst O intermediate product restant
Answer:
Reactant
Explanation:
The chemical expression is given as:
2Na + Cl₂ → 2NaCl
The species on the left hand side which are Na and Cl₂ are referred to as the reactants.
The specie on the right hand side, NaCl is the product of the reaction.
There is no catalyst shown in this reaction.
Such a reaction as this is called a combination reaction or synthesis reaction in which two reactants gives rise to a product.
Write a chemical formula for this molecule.
Answer:
CO2
Explanation:
we can see one carbon atom and 2 oxygens meaning this is Carbon dioxide or CO2
Look at the following equation.
_N2 + _H2 - _NH3
In order to follow the law of conservation of mass, this equation must have which set of coefficients, in order from left to right?
A.
1,3,2
B.
3, 3, 1
C.
2,2,2
D.
2,3,1
Answer:
A
Explanation:
_N2 + _H2 - _NH3
LHS RHS
N=2×1=2 N=1×2=2
H=2×3=6 H=3×2=6
1,3,2
What drives convection currents in the atmosphere?
A. Heat from Earth's core
B. Jake from State Farm
C. The Sun
Answer:
a I guess
Explanation:
HELP!!! An experiment was conducted to determine if the intermolecular forces in two liquids affects their boiling points. Each liquid was sprayed on a paper towel. Each
paper towel was wiped across a glass table to moisten the surface. The table shows a partial record of the experiment.
Experimental Record
Liquid Intermolecular Forces ?
А
relatively strong
B
relatively weak
What information should be recorded in the last column of the table?
Time taken by the liquids to start boiling
Time taken by the glass surface to dry
Volume of liquid required to moisten the paper towels
Time taken by the paper towels to become completely moist
Answer: it would be b time taken by the glass surface to dry
Explanation:
i had took the test and i got it right
Answer:
B: Time taken by the glass surface to dry
Explanation:
because if you go to a store and buy two different brands like for example you but windex or invisible glass then you can say for example if i use windex it will dry faster and with invisible glass i will take longer to dry but if you use windex witch drys faster then you will not have streaks on the table when someone sits. and i also got it right
1. How many atoms are in 3.5 moles of nickel?
The number is 6.022 x 10^23 atoms/mol.
Need answer immediately. For college homework. Organic Chemistry.
Here's the question written out so others can find it if they need:
Provide a structure for the following compound: C6H16N2; IR: 3281 cm–1; 1H NMR: δ 1.1 (8H, t, J = 7 Hz), δ 2.66 (4H, q, J = 7 Hz), δ 2.83 (4H, s). (Hint: The triplet at δ 1.1 conceals another broad resonance that contributes to the integral.)
THIS IS THE ANSWER: CH3-CH2-NH-CH2-CH2-NH-CH2-CH3
I hope this helps! Please give Brainliest if you feel this helped. Have a good day and a good rest of your 2021, best of luck with your classes.
Answer:
the answer is below.
Explanation:
CH3-CH2-NH-CH2-CH2-NH-CH2-CH3
What kind of waves can travel through a vacuum?
Mechanical waves
Electromagnetic waves
All of the above
None of the above
Please help ASAP
Answer:
electromagnetic wave
Explanation:
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate.
Balance the chemical equation. Based on the equation, how many grams of chlorine are produced when the sodium chloride decomposes and produces 19.5 grams of sodium? Use the periodic table to get the weights of the elements.
Drag the labels to the correct locations to complete the analysis. Each label can be used more than once.
]
Answer:
Answer is in the photo
Explanation:
Have a nice day and if the photo isn’t visible let me know! :)
The balance chemical equation is as,
[tex]2NaCl[/tex] → [tex]2Na + Cl_{2}[/tex]
The 30.1 grams of chlorine are produced when the sodium chloride decomposes and produces 19.5 grams of sodium.
Calculation,
22.99 g of sodium present in 1 mole of sodium atom.
In 19.5 g of sodium = 19.5 g× 1 mole / 22.99 g = 0.85 mole
The mole ratio = 2:1
It means 2 mole of sodium produce along with 1 mole of chlorine when sodium chloride decomposed.
So, number of mole of chlorine when 0.84 mole of sodium produce = 0.85 mole×1 mole/ 2 mole = 0.424 mole
number of mole of chlorine = given mass/molar mass of [tex]Cl_{2}[/tex] = 0.424
Given mass of [tex]Cl_{2}[/tex] = molar mass of [tex]Cl_{2}[/tex]× number of moles of [tex]Cl_{2}[/tex] = 70.9×0.424 = 30.1 gram
What is balanced chemical equation?The symbolic representation in which number of atoms in reactant side is equal to number of atoms in product side.
learn about balance chemical equation,
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help? It’s question 9
Answer:
a
Explanation:
its a
what type of chemical reaction is it
Answer: It's chemical
Explanation:
Because it's chemical :))
