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
Kisachek [45]
3 years ago
15

If 156 grams of chromium react with an excess of oxygen, as shown in the balanced chemical equation below, how many grams of chr

omium oxide can be formed? (1 point)
4Cr + 3O2 yields 2Cr2O3

78 grams

104 grams

228 grams

912 grams
Chemistry
1 answer:
GenaCL600 [577]3 years ago
7 0
228 grams
start with mass of Cr multiply by molar mass of Cr mole to mole ratio between Cr and Cr2O3 times molar mass of Cr2O3
You might be interested in
In the important industrial process for producing ammonia (the Haber Process), the overall reaction is:
Kisachek [45]

Answer:

Explanation:

Here we have to use stoichiometry.

First of all, we have to calculate the mass of 100% of yield:

1.7 g ------- 98%

X -------- 100%

X = 1.73 g (approximately)

Second, we have to calculate the mass of N2 that is necessary to react to produce the mass of 1.73g of NH3. To do that, we have to use the Molar mass of N2 and NH3 and don't forget the stoichiometric relationship between them.

Molar Mass N2 : 14x2 = 28 g/mol

Molar Mass NH3: 14 + 3 = 17 g/mol

28g (N2) ------- 17x2 (NH3)

X ------------ 1.73 g

X = 1.42 g (approximately)

5 0
3 years ago
Coefficients of the correct balanced equation for the reaction, CaCl2 + AgNO3 ⟶ AgCl + Ca(NO3)2.
mote1985 [20]

Answer:

CaCl2 + 2 AgNO3 ---> 2 AgCl + Ca(NO3)2

6 0
3 years ago
Covers the north and south poles of the earth 2 words
Viefleur [7K]

Answer: While the South Pole lies on a continental land mass, the North Pole is located in the middle of the Arctic Ocean amid waters that are almost permanently covered with constantly shifting sea ice.

Explanation: Covers the north and south poles of the earth 2 words

5 0
3 years ago
Please help me!! i will give branliest to the best answer
Komok [63]

Answer:that answer is b

Explanation:

8 0
3 years ago
Is this name correct?: Barium (II) sulfate
Gelneren [198K]

Answer:

yes, Barium sulfate (or sulphate) is the inorganic compound with the chemical formula BaSO4

Explanation:

6 0
3 years ago
Other questions:
  • the density of gold is 19.3 g/cm^3. You inherit a gold bar that measures 7.0 in by 3.0 in by 2.0 in. How many ounces does the ba
    7·1 answer
  • What is a covenant bond
    10·1 answer
  • The substance floats or sinks in another because of its relative
    15·1 answer
  • The movement of rocks and soil is an example of
    8·2 answers
  • Predidt the direction and the relative value of the dipole moment of the following bond: C-Cl
    14·1 answer
  • What happens when the sun beats up the earth
    14·1 answer
  • If element x has 20 protons, how many electrons does it have
    10·1 answer
  • Use the following information to calculate the concentration, Ka and pka for an unknown monoprotic weak acid. (8 pts.) 20.00 mL
    9·1 answer
  • All atoms of a given element must contain the same number of
    6·1 answer
  • What is the predominant intermolecular force in the liquid state of each of these compounds: hydrogen fluoride (HF), carbon tetr
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!