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
stiv31 [10]
3 years ago
10

A sample of a substance containing only magnesium and chlorine was tested in the lab and was found to be composed of 74.5% chlor

ine by mass. If the total mass of the sample was 190.2 grams, what was the mass of the magnesium?
A) 24.3 g B) 48.5 g
C) 70.9 g D) 142 g
I know the answer is B, but I don't understand why.....
Chemistry
1 answer:
chubhunter [2.5K]3 years ago
8 0
Use a ratio to find out that x/190.2 = 74.5/100 

hope this helps
You might be interested in
Explain how its electron configuration influences the chemical behavior of an atom.
Llana [10]

More unstable an electron configuration , the more reactive an atom will    become.

How electron configuration influences the chemical behavior of an atom?

This is happen generally, If we look at the Group 1 elements in the periodic table, they are all highly reactive as they have 1 electron in their outermost shells - an unstable configuration in terms of energy.

Also, the noble gases in Group 8 in the periodic table are 'inert' that means they don't react (or more correctly, have an incredibly low reactivity). This is because they have 8 electrons in their outermost shell and thus have no need to acquire or lose electrons to possess a stable electron configuration.

Hence, electron configuration influences the chemical behavior of an atom.

learn more about electronic configuration here :

brainly.com/question/26084288

#SPJ4

6 0
1 year ago
Label the parts of the respiratory system.
Evgesh-ka [11]

Answer:

1. Nose

2. Mouth

3. Larynx

4. Lung

5. RIght Bronchi

6. Diaphragm

7. Pharynx

8. Trachea

9. Left Bronchi

10. Bronchioles

11. Avoli

Explanation:

8 0
3 years ago
After wood burns, the ash weighs much less than the original wood. explain why the law of conservation of mass is not violated i
Annette [7]
When wood burns it makes 1 ash and 2 CO and so law of conversation matter wouldn't be violated as the ash + the smoke each would have a fraction of the original matter from the wood
8 0
3 years ago
Read 2 more answers
the temperature is increased, the position of equilibrium moves to the left, and the yield of ammonia decreases.
igomit [66]

Answer:i don't rlly get the question but this is what i found on the internet :/

Explanation:

When the temperature is increased, the position of equilibrium moves in the endothermic direction to reduce the temperature. ... This means that as the temperature is increased, the position of equilibrium moves to the left, and the yield of ammonia decreases.

7 0
3 years ago
Which of the following pathways produces the most nadh and the least atp?
Zina [86]
It seems that you have missed the necessary options for us to answer this question so I had to look for it. Anyway, here is the answer. The pathway that produces the most NADH and the least ATP is the KREBS CYCLE. Hope this answers your question. Have a great day ahead!
5 0
3 years ago
Other questions:
  • What's lithium scientific name?
    12·1 answer
  • Alcohol and water have different boiling points. Which method would you use to separate them
    5·2 answers
  • How many grams of CO2 are in 11 mol of the compound?
    12·2 answers
  • Where is almost all the mass of an atom​
    6·1 answer
  • By which process do light rays pass through window glas
    12·1 answer
  • More Changes of state: Activate 1 p68-69 What is evaporation and how is it different to boiling
    5·1 answer
  • What is the percent yield if 107.50 g NH3 reacts with excess O2 according to the
    15·1 answer
  • How is an endothermic reaction identified?
    5·2 answers
  • Why did acid make our teeth rot?
    5·2 answers
  • A The birthrate is higher than the death rate.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!