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
Natalija [7]
3 years ago
11

3. Calculate the atomic mass of bromine. The two isotopes of bromine have atomic masses and relative abundance of 78.92 amu (50.

69%) and 80.92 (49.31%).
Chemistry
1 answer:
oksano4ka [1.4K]3 years ago
4 0
(78.92) (50.69)+(80.92)(.4931)

(4000)+(39.90)

=79.9 amu

Answer is 79.9 amu

It will help you
You might be interested in
a compound has a percent compostion of carbon equal to 48.8383%, hydrogen equal to 8.1636%, and oxygen equal to 43.1981%. what i
Margarita [4]

Answer:

C₂H₃O

Explanation:

From the question given above, the following data were obtained:

Carbon (C) = 48.8383%

Hydrogen (H) = 8.1636%

Oxygen (O) = 43.1981%

Empirical formula =?

The empirical formula of the compound can be obtained as follow:

C = 48.8383%

H = 8.1636%

O = 43.1981%

Divide by their molar mass

C = 48.8383 / 12 = 4.07

H = 8.1636 / 1 = 8.1636

O = 43.1981 / 16 = 2.7

Divide by the smallest

C = 4.07 / 2.7 = 2

H = 8.1636 / 2.7 = 3

O = 2.7 /2.7 = 1

Thus, the empirical formula of the compound is C₂H₃O

8 0
3 years ago
CaC2 + 2H2O ⟶ C2H2 + Ca(OH)2
kondaur [170]

0.499 mol

Explanation: M(CaC2) = 64.1 g/mol, n= m/M = 32.0 g/ 64.1 g/ mol= 0.499 mol

Amount of Calcium hydroxide Is same

7 0
3 years ago
FREE BRAINLIST NEED HELP ASAP
mixas84 [53]
Sulfur.
there’s no neutrons and 16 protons
7 0
2 years ago
Calculate the molar solubility of copper(II) arsenate (Cu3(AsO4)2) in water. Use 7.6 x 10^-36 as the solubility product constant
Molodets [167]
Molar solubility<span> is the number of moles of a substance (the solute) that can be dissolved per liter of solution before the solution becomes saturated. We calculate as follows:

</span>3Cu2+ + 2(AsO4)3-<span> = Cu3(AsO4)2
</span>
7.6 x 10^-36 = (3x^3)(2x^2)
x = 6.62 x 10^-8 M
8 0
2 years ago
Read 2 more answers
Why is stability of compounds essential
yuradex [85]

Answer:

chemical stability is important to consider in the comprehensive assessment of pharmaceutical properties, activity, and selectivity during drug discovery.

7 0
2 years ago
Read 2 more answers
Other questions:
  • What is an aspect of the kinetic-molecular theory and can be used to explain the behavior of plasmas?
    7·1 answer
  • Give three examples of elements that are gases at room temperature
    10·1 answer
  • Lucy needs to lift a crate to a shelf 20 m high. She does 12,000 J of work on a machine to help her. The machine exerts a force
    5·1 answer
  • Suppose a container holds 1000 hydrogen molecules (H2) and 1000 oxygen molecules (O2) that react to form water. How many water m
    8·1 answer
  • 1) How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7g Fe? Show your work.
    8·2 answers
  • Seafood Watch has made several unsustainable fishing practices illegal. true or false
    5·2 answers
  • What would a substance that could undergo condensation polymerization most likely have?
    11·2 answers
  • Why do you cut chromosomes in pairs
    7·1 answer
  • Dyfuzja co to jest i na czym polega
    12·1 answer
  • Helium on the Moon was found to be 0.420% 2He, 2.75% 3He, and 96.83% 4He. What is the average atomic mass of helium on the Moon?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!