CHEMISTRY HIGH SCHOOL

How many moles of water (H2O) would be produced if 10 moles of O2 gas reacted completely with excess H2 gas?2 H2(g) + O2(g) → 2 H2O(g)

A. 5
B. 10 
C. 20
D. 30 

Answers

Answer 1
Answer:

Answer:

C. 20

Explanation:

Use the equation to know that 1 mol of O2 is equal to 2 mol H2O.

Now you will start with the data, this is 10 mol O2 and you obtain:

10 mol O2  x 2 mol H2O    =  20 mol H2O

                        1 mol O2
Answer 2
Answer: 2 H2(g) + O2(g) → 2 H2O(g)

according to the reaction:
1 mole of O2-----------------2 moles of H2O
10 moles of O2--------------------- x
x = 20 mole of H2O

answer: C

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Select all that apply. Organic compounds must contain: hydrogen carbon oxygen nitrogen

Answers

Select all that apply. Organic compounds must contain carbon. Organic molecules mean that chemical compounds contain carbon in them. Organic also refers to living organisms. So originally, the term organic molecules are found in living things. Carbon can also bond with other four atoms because of its outer shell that has four electrons. This is the reason why organic molecules can be so large because of this bonding. For example, we need proteins in our body in order to perform the necessary functions to live. Proteins are made up of nucleic acids. And nucleic acids have a carbon-nitrogen-hydrogen bond in it

Answer: hydrogen and carbon

Explanation:

Organic compounds are those compounds that contain carbon bonded to hydrogen.Example: CH_4 is an organic compound as it contains C-H bond.

Inorganic compounds are those compounds that do not contain carbon or contain carbon not bonded to hydrogen. They might contain other elements such as nitrogen or oxygen. Example: CO_2

In the mid-1900s, most scientists used the Bohr atomic model to study atoms. In the Bohr model, electrons move in set paths around the atom's nucleus.In current atomic models, electron clouds are shown around the atom's nucleus. Electron clouds are regions where electrons are likely to be found.

What is a limitation of current atomic models as compared to the Bohr atomic model?

A. Current atomic models do not indicate the position of the nucleus within the atom's structure.

B. Current atomic models do not show how many electrons an atom has.

C. Current atomic models do not show where the electron is but only where the electron is likely to be.

Answers

the answer is c beca it true

Answer:

The answer is C.

Explanation:

What is the acceleration that this box will move? (Don't forget your units)

Answers

Answer:

160 I think or 200

Explanation:

the lines are pulling on the same side so you add those

What type of measurement is indicated by g/mL ?

Answers

Answer:

grams per milliliter.

Explanation:

While any units of mass and volume can be used to calculate density the most common are grams (g) and milliliters (ml). This gives density the units of grams per milliliter (g/ml).

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Answers

Answer: Both heat and energy.

Explanation:

Which general trend in period 2 on the Periodic table as the elements are considered in order of increasing atomic number? 1)increasing atomic radius
2.) decreasing electronegativity
3.) increasing 1st ionization energy
4.) decreasing atomic mass

Answers

As the atomic number increase in the 2nd period, the first ionization energy also increases. Therefore, option (3) is correct.

What is the ionization energy?

The ionization energy can be described as the minimum amount of energy that is absorbed by an electron to come out of the influence of the nucleus of a gaseousatom.

In general, the atomic number of an atom increases as we move from left to right in a period on the modern periodic table. While moving from left to right, there is an increase in the effective nuclear charge while the electron enters the same electron shell.

The atomic radius of an atom in the period decreases in the order of increasing atomic number. As the effective nuclear charge is increasing large amount of energy is required to knock out the electron from an atom. Therefore, the first ionization energy also increases as the atomicnumber increase in the 2nd period.

Learn more about ionization energy, here:

brainly.com/question/16761169

#SPJ6
3.) Increasing 1st ionization energy.
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