1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tekilochka [14]
3 years ago
5

22. Naturally occurring hydrogen consists of three isotopes, hydrogen-1 (1.07 u)

Chemistry
1 answer:
astra-53 [7]3 years ago
6 0

Answer:

The answer to your question is: a. Hydrogen-1

Explanation:

Hydrogen-1 (1.07 u)

Hydrogen-2 (2.02 u)

Hydrogen-3 (3.01 u)

Periodic table says that H has an atomic mas of 1.008

Then, the reported atomic mass is closer to the mass of the smaller isotope, so Hydrogen-1 must be present in larger percentage.

You might be interested in
A sample of water at 100°C is converted to steam after absorbing 820 kJ of heat. How grams of H2O are contained in the sample? A
Varvara68 [4.7K]
Since water is already at 100<span>°C all the energy is used to evaporate it. 
Now we can calculate how many </span>mols of water are evaporated with 820kJ.
N= \frac{820}{41} =20 mol
We calculated that we got 20 mols of water evaporated. Now, all we have to do is find how many grams is a mol of water. Molar mass of water is <span>20.16 g/mol.
</span>The final answer is:
m=20*20.16=403.2g




7 0
3 years ago
Describe the difference between a reaction that occurs spontaneously and one that does not
lidiya [134]
2.B. Describe the difference between a reaction that occurs spontaneously and one that does not. Spontaneous chemical reactions release energy and use that energy to power itself; non-spontaneous chemical reactions need to absorb energy, which they can't absorb their own energy that they don't even have.
4 0
3 years ago
In order to synthesize proteins, carbohydrates, lipids, and nucleic acids, cells require _____.
jonny [76]

Answer:

Energy

Explanation:

A sugar group would be used for carbohydrates or nucleic acids. An adenosine group would be used in ATP formation if I recall correct. And disaccharides are just two monosaccharides linked together, so that would also be for carbohydrates. Therefore, energy is the answer.

4 0
3 years ago
Show the equation how many grams of Mg(OH)2 would be produced from 4 mol KOH?
Sindrei [870]
Mole ratio:

MgCl₂ + 2 KOH = Mg(OH)₂ + 2 KCl

2 moles KOH ---------------- 1 mole Mg(OH)₂
4 moles KOH ------------------- moles Mg(OH)₂

moles Mg(OH)₂   = 4 x 1 / 2

= 2  moles of   Mg(OH)₂

molar mass Mg(OH)₂ = 58g/mol

mass of   Mg(OH)₂ = n x mm

mass of  Mg(OH)₂ = 58 x  2

= 116 g of <span> Mg(OH)₂</span>

hope this helps!
8 0
2 years ago
Is the following equation balanced? SO3 + 2H2O H2SO4 no yes
postnew [5]

Answer: No

Explanation: It's not balanced because four oxygen atoms in H2SO4,  whereas there are 5 oxygen atoms in the reactants side. Also, there's more hydrogen atoms on the reactants side.

I hope this helps!

7 0
3 years ago
Other questions:
  • Which change occurs at the anode in an operating electrochemical cell?
    15·1 answer
  • Which elements are most likely to gain an electron when becoming an ion?
    5·1 answer
  • During an oil spill, oil coats the surface of the water, endangering sea life. Why doesn’t oil dissolve in ocean water
    11·1 answer
  • A slice of Swiss cheese contains 41 mg of sodium.
    7·1 answer
  • The total mass of the products 50g. Which best completes the other two amounts
    8·1 answer
  • Which half- reaction equation represents reduction?
    10·2 answers
  • Convert 3.30 g of copper (II) hydroxide Cu(OH)2 to molecules.
    8·1 answer
  • How are covelant and ionic bonds different and what types of elements combine to form each?
    13·2 answers
  • How many moles of oxygen gas are need to produce 5.53 x 10 moles of water (1)
    12·1 answer
  • How many electrons are in a ion that has 16 protons and 59 neutrons if it has negative 2 charge? ​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!