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
BigorU [14]
2 years ago
13

Magnesium oxide (MgO) forms when the metal burns in air. (a) If 1-25 9 of MgO contains 0.754 g of Mg, what is the mass ratio of

magnesium to oxide? (b) How many grams of Mg are in 534 g of MgO?
Chemistry
1 answer:
Vsevolod [243]2 years ago
5 0

Answer:

Explanation:

a )

1.25 g MgO contains .754 g of Mg .Rest will be O

so oxide = 1.25 - .754 = 0.496 g

ratio of magnesium to oxide = .754/.496 = 1.52

b) 1.25 g of MgO contains .754 g of Mg

534 g of MgO contains .754 x 534 / 1.25 g = 322.11 g

You might be interested in
Questions
ASHA 777 [7]

Answer:

Explanation:

1. diffusion is a physical process when there is random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.

2. Osmosis is the diffusion of water where molecules of water move passively (without energy) from high concentration to low concentration. eg: the way water rushes into a sponge.

3. Active transport moves particles from low to higher concentration. The difference between diffusion and active transport is diffusion does not require energy (eg: oxygen moving from the airways to the lungs - there is very little oxygen in the lungs but lots in the air).  whereas active transport does require energy (eg: when plants take up nutrients from the soil. The soil does not have a large concentration of nutrients, but the plant does)

7 0
2 years ago
Find ∆G for a cell whose potential is +0.24 V with 4 moles of electrons exchanged.
Setler [38]
We need to use the following formula
ΔG= -nF E_{cell}

E_{cell}= 0.24V
n= 4 moles
F= constant= 96500C/mol

let's plug in the values.

ΔG= -(4)(96500)(0.24)= -92640 J or -92.6 kJ
6 0
3 years ago
Read 2 more answers
A 5.5 g sample of a substance contains only carbon and oxygen. Carbon makes up 35% of the mass of the substance. The rest is mad
Umnica [9.8K]

We have been given the condition that carbon makes up 35% of the mass of the substance and the rest is made up of oxygen. With this, it can be concluded that 65% of the substance is made up of oxygen. If we let x be the mass of oxygen in the substance, the operation that would best represent the scenario is,

<span>                                       x = (0.65)(5.5 g)</span>

<span>                                       <em> </em><span><em>x = 3.575 g</em></span></span>

8 0
2 years ago
What makes your pulse? Explain​
Serga [27]
Blood flowing into and out your heart makes your pulse
6 0
2 years ago
I need help with question 4
meriva

The bat in my opinion...

3 0
3 years ago
Read 2 more answers
Other questions:
  • Name the 1 isomer of c7h16 that contains an ethyl branch on the parent chain.
    5·1 answer
  • When a potassium atom forms an ion, it loses one electron. What is the electrical charge of the potassium ion?
    8·2 answers
  • 8. One household remedy for bee stings is to make and apply a baking soda paste. From your data on baking soda water, what type
    11·1 answer
  • Calcium hydroxide, Ca(OH)2, is neutralized by hydrochloric acid, HCl, and the products are calcium chloride and water. You have
    7·1 answer
  • Only 10% of energy available at each trophic level moves on to the next level. What happens to the other 90%
    7·1 answer
  • The student placed 10 mL of PbCl2 (saturated solution) in the test tube and added a pinch of NaCl. A white precipitate of PbCl2
    5·1 answer
  • What is the balance of NH3+HCL=NH4CL+H2O
    11·1 answer
  • What is the compound name of NO3?
    15·2 answers
  • Read, now please rail me jkjkjk.................Unless
    11·2 answers
  • Someone please help :/
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!