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
NISA [10]
3 years ago
14

a chemist determined by measurements that 0.0800 moles of calcium sulfide participate in a chemical reaction. Calculate the mass

of calcium sulfide that participates.
Chemistry
1 answer:
lana66690 [7]3 years ago
5 0

Answer:

5.77 g

Explanation:

Amount of calcium sulfide = 0.0800 mol

Molar mass of calcium sulfide = 72.1 g/mol

Mass of calcium sulfide = 0.0800 mol x 72.1 g/mol

= 5.77 g

You might be interested in
4
STALIN [3.7K]

Answer: The space occupied by the gas at 400 torr and 25^{o}C is 250 mL.

Explanation:

Given: V_{1} = 250 mL,    P_{1} = 800 torr,     T_{1} = 50^{o}C

V_{2} = ?,         P_{2} = 400 torr,        T_{2} = 25^{o}C

Formula used is as follows.

\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}

Substitute the values into above formula as follows.

\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\\\frac{800 torr \times 250 mL}{50^{o}C} = \frac{400 torr \times V_{2}}{25^{o}C}\\V_{2} = 250 mL

Thus, we can conclude that space occupied by the gas at 400 torr and 25^{o}C is 250 mL.

7 0
3 years ago
A student titrates 10.00 milliliters of hydrochloric acid of unknown molarity with 1.000 m naoh. it takes 21.17 milliliters of b
Dima020 [189]
Mole ratio for the reaction is 1:1
no of moles in NaOH that reacted= 1*21.17/1000=0.02117mols
 molarity of HCl=0.02117*10/1000
                         =2.117M
4 0
3 years ago
When swimmers push against the wall of a pool with their feet, they are pushed away from the wall. Which of Newton's laws explai
Alecsey [184]

It would be his third law

8 0
3 years ago
A'Zorria Ward
Delicious77 [7]

Explanation:

An elevator traveled 150 ft at a speed of 4.5 m/s. What additional information is needed to determine the velocity of the elevator?

Velocity is vector quantity.So it needs direction in addoition to speed.

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of its speed and direction of motion.

5 0
2 years ago
The equation below shows the thermite reaction, which has often been used for welding iron.
Strike441 [17]

Answer:

335 Joules kJ of heat will be released

Explanation:

Given the balanced equation:

8 Al (s) + 3 Fe3O4 (s) ----------> 4 Al2O3 (s) + 9 Fe(s),

ΔH = -3350*KJ/mol rxn

This is the heat  released when 8 moles of Al react with 3 mol Fe3O4.

We then need to calculate the moles of reactants, verify if there is a limiting reagent and proceed to answer the question based on the soichiometry of the reaction.

Atomic weight Al = 26.98 g/mol  Molecular Weight Fe3O4 = 231.53 g/mol

mol Al = 47.6 g/26.98 g/mol = 1.76 mol

mol Fe3O4 = 69.12 g/ 231.53 g/mol = 0.30 mol

Limiting reagent calculation:

8 mol Al / 3 mol Fe3O4  x 0.30 mol Fe3O4 =  0.80  mol Al are required and we have 1.76 mol, therefore  Fe3O4 is the limiting reagent

Amount of Heat

-3350 kJ/ 3 mol Fe3O4  x 0.30 mol Fe3O4 = -335.00 kJ

8 0
3 years ago
Other questions:
  • HELPPPPPP<br><br> Cracking of heptane please help! Show the chemical formula and the diagrams
    15·1 answer
  • In this molecule, what's the formal charge on the central O atom?
    11·2 answers
  • Using the periodic table entry of iron below, match the numbers with what they represent.
    6·1 answer
  • Unstable traffic flow occurs when drivers accelerate and brake too often. Unstable traffic flow wastes energy. The table below g
    11·1 answer
  • How many hydrogen atoms are in 2NH3
    11·2 answers
  • Which of the following questions is most testable through scientific experimentation?
    9·2 answers
  • The Lewis dot diagram for LiBr
    9·1 answer
  • Certain gases in the atmosphere trap heat on Earth.
    15·1 answer
  • Suppose you need to prepare 120.8 mL of a 0.249 M aqueous solution of NaCl. What mass, in grams, of NaCl do you need to use to m
    6·1 answer
  • (a) Give one function each of the following equipments
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!