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
Reika [66]
2 years ago
5

Select each correct answer. More than one answer may be correct. Four atoms of hydrogen combine with one carbon atom to form CH4

, but only two hydrogen atoms combine with one oxygen atom to form H2O. Which of the following helps to explain why? Hydrogen has one valence electron. Metallic bonds form between positively charged metal ions and delocalized electrons. Atoms may share electrons in order to fill their electron shells. Oxygen has two vacancies in its electron shell, but carbon has four vacancies.
Chemistry
1 answer:
Ivan2 years ago
6 0
It’s the mentioning the amount of valence electrons in hydrogen, and the one about electrons share electrons to fill their shells.
You might be interested in
Calculate the molarity of a solution of monoprotic KHP prepared by mixing a 0.5237 g KHP in 50.0 mL of water .
Sergio039 [100]

Answer:

M=0.0513M

Explanation:

Hello!

In this case, since the molarity of a solution is computed by dividing the moles of solute by the volume of solution, we notice we first need the moles of KHP as shown below:

n=0.5237g*\frac{1mol}{204.22 g} =0.00256mol

Next, the volume in liters:

V=50.0mL*\frac{1L}{1000mL}\\\\V=0.0500L

Thus, the molarity turns out to be:

M=\frac{n}{V}\\\\M=\frac{0.00256mol}{0.05000L} \\\\M=0.0513M

Best regards!

3 0
3 years ago
Define the term compound
dalvyx [7]

Answer:

A compound is a substance which contains two or more elements chemically combined together.

A compound is formed as a result of a chemical change.

Explanation:

7 0
3 years ago
A gas occupies 25,3 mL at a pressure of 152 kPa. Find the volume if the pressure is
sleet_krkn [62]

Answer:

This is under gas laws. check it out

3 0
3 years ago
The theoretical yield of NaBr from
Dvinal [7]

the percent yield of the reaction is 100%.

The percent yield is calculated as the experimental yield divided by the theoretical yield x 100%:

% yield = actual yield / theoretical yield * 100%

% yield of a reaction in this case Rate

In this case, the molar mass of NaBr is 102.9 g / mol, as you know:

444 actual yield = 7.08 mol x 102.9 g / mol = 728.532 g

theoretical yield = 7.08 mol x 102.9 g / mol = 728.532 g

, Replaced by the definition of percent yield:

percent yield = 728.532 grams / 728.532 grams * 100%

percent yield = 100%

Finally, the percent yield of the reaction is 100%.

<h3 />

FeBr3 is iron bromide. Also known as iron bromide. Iron bromide is an ionic compound in which iron is in a +3 oxidation state.

Learn more about % yield here:brainly.com/question/27979178

#SPJ10

5 0
2 years ago
Describe how you can figure out how many grams of a COMPOUND if you know how many moles there
____ [38]
Divide the mass of the compound in grams by the molar mass you just calculated. The answer is the number of moles of that mass of compound. For example, 25 grams of water equals 25/18.016 or 1.39 moles.
4 0
2 years ago
Other questions:
  • Why is water called the universal solvent
    15·2 answers
  • Volume, temperature, and pressure are used to measure gas . True or false?
    7·1 answer
  • Tentukan pH Mg(OH)2 jika ke dalam larutan MgCl2 0,2M ditambahkan NH4OH sehingga
    9·1 answer
  • 3 materiales corrosivos
    13·1 answer
  • To show the electron configuration for an atom, what is the advantage of using an orbital notation compared to a dot structure?
    12·2 answers
  • g If attempting to dissolve both silver bromide and silver chloride in aqueous solution through complex ion formation, which dat
    13·1 answer
  • The isotope of an atom containing 31 protons and 39 neutrons suddenly has two neutrons added to it. What isotope is create?
    14·1 answer
  • Which one of the following produces hydrogen ions in a water solution?
    7·1 answer
  • Which statement about the change in bond energy of this reaction is correct?
    14·1 answer
  • What is the order in which electrons start filling the orbitals?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!