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
EleoNora [17]
3 years ago
13

What is the mass of bromine in 11.2g of MgBr2?​

Chemistry
1 answer:
True [87]3 years ago
8 0

Answer:

9.72 grams of Br

Explanation:

This is the salt: MgBr₂ (Magnesium bromide)

1 mol of MgBr₂ has 1 mol of Mg and 2 mol of Br

Molar mass MgBr₂ → 184.11 g/m

So the rule of three will be:

184.11 g of salt have 2 moles of Br

11.2 g of salt have (11.2 . 2)/184.11 = 0.122 moles of Br.

Molar mass Br = 79.9 g/m

Mol . molar mass = mass → 0.122 m . 79.9 g/m = 9.72 g

You might be interested in
What bias conditions must be present for the normal operation of a transistor amplifier? A. The emitter-base junction must be fo
natali 33 [55]
The answer would be A. which says the emitter- base junction must be forward biased, and the collector- base junction must be reverse biased.
8 0
3 years ago
Use the information for the isotopes of element X to calculate the average atomic mass of X, and identify the element. Isotope A
BigorU [14]

Answer

36.45 u; X = Cl

Explanation:

The atomic mass of X is the <em>weighted averag</em>e of the atomic masses of its isotopes.

We multiply the atomic mass of each isotope by a number representing its relative importance (i.e., its percent of the total).

Set up a table for easy calculation .

0.7577  × 34.969 u = 26.496   u

0.2423 × 36.965 u =  <u> 8.9566 u </u>

                   TOTAL = 36.45     u

X = Cl

5 0
4 years ago
Read 2 more answers
Will a chlorine atom gain or lose electrons? <br> Gain or Lose
user100 [1]

Answer:

Chlorine (Cl) in its lowest energy state (called the ground state) has seven electrons in its outer shell. Again, it is more energy-efficient for chlorine to gain one electron than to lose seven. ... In the formation of an ionic compound, metals lose electrons and nonmetals gain electrons to achieve an octet.

Explanation:

3 0
3 years ago
Which of the following can cause acid precipitation
bagirrra123 [75]

Answer:

C. The use of coal

Explanation:

7 0
3 years ago
A study of the spectrum of the sun led to the discovery of helium.<br><br><br> True False
elixir [45]

Answer:

True

hope this helps

have a good day :)

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • When molecules are not touching what is that called
    7·1 answer
  • Condition required for nuclear fusion in the sun?
    7·2 answers
  • What is the overall reaction order for the following rate law: rate = k [A]2[B]? A. zero B. first C. second D. third
    15·2 answers
  • How many silver (Ag) atoms are in a silver bar that is 20.0 g? A. 1.3 3 1027 Ag atoms B. 6.02 3 1023 Ag atoms C. 1.1 3 1023 Ag a
    12·2 answers
  • What is it called when a solid changes directly into gas?
    11·1 answer
  • Can someone solve this plz<br> βeta decay<br> carbon atomic mass 14 <br> atomic # 6
    6·1 answer
  • Which of the following is an exothermic reaction?
    7·2 answers
  • Which statement best explains why a cell might shrivel?
    6·1 answer
  • A compound consists of 81.8% C and 18.2% H by mass. What is its empirical formula?​
    14·1 answer
  • Which moon phase does a solar eclipse occur in?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!