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
zysi [14]
3 years ago
14

Which is an example of chemical change

Chemistry
1 answer:
Oksanka [162]3 years ago
4 0
Mixing of posted colours
You might be interested in
The number of mole of a molecule is defined as its mass per molar mass. Using # mol = n, mass = m and molar mass = M and given t
Citrus2011 [14]
Given:
n = 0.0021 mol
M = 44 gram/mol

Required: m or the mass of the molecule

Solution:

M = m/n

Rearranging the expression,

m = M x n
m = 44 g/mol x 0.0021 mol

Evaluating the expression and cancelling units, we obtain,

m = 0.0924 grams

M is the molar mass. This value is very useful in chemistry calculations especially in calculating the amounts of reactants and products for a chemical reaction.
5 0
3 years ago
Which elements have fewer than four dots in their electron dot diagrams
Alex787 [66]
Hydrogen, helium, lithium,
6 0
3 years ago
Read 2 more answers
Why are lead compounds harmful to us?
Dominik [7]

Explanation:

Lead can cause effects on the blood, as well as the nervous, immune, renal and cardiovascular systems. ... Exposure to high amounts of lead can cause gastrointestinal symptoms, severely damage the brain and kidneys, and may cause reproductive effects. Large doses of some lead compounds have caused cancer in lab animals.

6 0
3 years ago
Explain the term respiration and how this process increases the percentage of carbon dioxide in the atmosphere.
sammy [17]

Answer:

Please find the explanation to this question below.

Explanation:

4 0
3 years ago
Compare the rates of effusion for carbon monoxide and carbon dioxide gases
Airida [17]
According to Grahams law the rate of effusion of a gas is inversely proportional to the square root of it's molecular weight. The rate of diffusion is the measure of rate at which two gases mix. From this law we can say that for the two gases carbon monoxide and carbon dioxide, the rate of effusion of carbon monoxide is greater than that of carbon dioxide, this is because carbon monoxide is lighter (28 g) compared to carbon dioxide (44 g). 
7 0
3 years ago
Other questions:
  • internal pressure is 1.25 atm, and its volume is 2.50 L. If the balloon is taken to the bottom of the ocean (pressure = 95.0 atm
    11·1 answer
  • A buffer solution contains 0.240 M ammonium chloride and 0.499 M ammonia. If 0.0565 moles of perchloric acid are added to 250 mL
    10·1 answer
  • In a 74.0-g aqueous solution of methanol, CH4O, the mole fraction of methanol is 0.140. What is the mass of each component?
    11·1 answer
  • 13.
    7·1 answer
  • F(x) = x^2 +1<br> What is f(f(x))?
    9·1 answer
  • Choose the aqueous solution that has the highest boiling point. These are all solutions of nonvolatile solutes and you should as
    8·1 answer
  • A 3.00 L flexible container holds a sample of hydrogen gas at 153 kPa. If the pressure increases to 203 kPa and the temperature
    14·1 answer
  • What is the charge of an aluminum ion? (2 points) Select one: a. 2+ b. 3+ c. 2- d. 3-
    8·1 answer
  • All 6 sides of a cube measure 65mm. Calculate the volume of the cube in cm32
    11·1 answer
  • What is the percent of Heterozygous rabbits
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!