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
slava [35]
2 years ago
7

How many atoms in total are there in 7.35 mol of magnesium oxide (MgO) molecules?

Chemistry
1 answer:
andreev551 [17]2 years ago
3 0

Answer:

4.42 x 10^24

Explanation:

You might be interested in
Hydrogen cyanide, HCN, can be made by a two-step process. First, ammonia reacts with O2 to give nitric oxide, NO.
stealth61 [152]

Answer:

The mass of HCN is 79.65 g.

The mass of reactant which remain at the end of both reactions is 88.5 g.

Explanation:

Given that,

Mass of ammonia = 50.2 g

Mass of methane = 48.4 g

Hydrogen cyanide, HCN, can be made by a two-step process

Ammonia reacts with O₂ to give nitric oxide NO.

The reaction is,

4NH_{3}+5O_{2}\Rightarrow 4NO+6H_{2}O

We need to calculate the mole of NO

Using given data,

2.25 g NH_{3}=\dfrac{50.2}{17}= 2.95\ mole\ NH_{3} [/tex]

4\ mole NH_{3}\ glose 4\ mol NO

2.95 mol NH₃ will produced 2.95 mol NO

Then nitric oxide reacts with methane,

The reaction is,

2NO+2CH_{4}\Rightarrow 2HCN+2H_{2}O+H_{2}

We need to calculate the mole of methane

Using given data,

mole\ of\ methane=\dfrac{48.4}{16}

mole\ of\ methane = 3.03\ moles

2 mole NO produced 2 mole HCN

2.95 mol NO will produced \dfrac{2.95\times3.03}{3.03}= 2.95 mol HCN

We need to calculate the mass of HCN

Using formula of mass

m=N\times M

Where, N = number of mole

M = molecular mass

Put the value into the formula

m=2.95\times27

m= 79.65\ g

The mass of HCN is 79.65 g.

We need to calculate the mass of NO

Using formula of mass

m=N\times M

Where, N = number of mole

M = molecular mass

Put the value into the formula

m=2.95\times30

m= 88.5\ g

Hence, The mass of HCN is 79.65 g.

The mass of reactant which remain at the end of both reactions is 88.5 g.

4 0
3 years ago
Most cars use water to cool their engines. Ethylene glycol, propylene glycol, or methanol may be added to the water, especially
NemiM [27]

Answer:

B

Explanation:

8 0
3 years ago
Did diagram shows embryo development of four different animals. How is this evidence used to suggest that life changes over time
wel
It suggests that life changes over time by showing different animals at different stages in their life, also giving more than one example on how they can change during early development and throughout their lives
5 0
3 years ago
Read 2 more answers
Sodium chloride (NaCI) is made from _____ of sodium (Na) and ___ of chlorine ( Ci)
astra-53 [7]
Sodium chloride is made from one sodium atom and one chlorine atom:

Sodium has a charge of +1, or just +.

Chlorine has a charge of -1, or just -.

These balance out.
6 0
3 years ago
Read 2 more answers
9.
Wewaii [24]
Answer: A) Water Explanation: Water molecules are polar molecules
6 0
2 years ago
Read 2 more answers
Other questions:
  • 1. Similarities between alchemy and chemistry include
    13·2 answers
  • Use the chart to determine which atom in the carbon–chlorine bond is assigned the delta negative charge. carbon atom chlorine at
    10·2 answers
  • What type of orbital overlap is responsible for the π bond between carbon and oxygen in the molecule below?
    7·1 answer
  • Alice is fed through a gastric tube. She has developed a pressure wound and needs extra protein to support wound healing. The re
    15·2 answers
  • A chemical reaction has two elements as reactants. Which type of reaction might occur
    14·1 answer
  • Why might Marie Curie have been motivated to teach the children of beet workers?
    6·1 answer
  • When electrons in a molecule are not found between a pair of atoms but move throughout the molecule, this is called Group of ans
    5·1 answer
  • The equation below shows the decomposition of lead nitrate. How many molecules of PbO are produced when 11.5 g NO2 is formed?
    8·1 answer
  • when different atoms bond, the more electronegativity atom attracts electrons more strongly and acquires a slightly negative cha
    10·1 answer
  • 4.6 x 105<br> How many significant figures?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!