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
kati45 [8]
3 years ago
12

Mercury can be obtained by reacting mercury(I) sulfide with calcium oxide. How many grams of calcium oxide are needed to produce

55.0 g of Hg? Note: 4 Hg2S + 4 CaO -> 8 Hg + 3 CaS + 1 CaSO4
Chemistry
1 answer:
OLga [1]3 years ago
4 0
First, 55 g of Hg is 3.65 moles because one mole of Hg has a molar mass of 200.59

Then, the mole ratio of Hg to CaO is 8:4 or 2:1. SO we divide 3.65 by 2 to get 1.82 moles of CaO

This is the same as 102.06 grams because one mole of CaO has a molar mass of 56.0774

Hope this helps!
You might be interested in
A genetic mutation that causes abnormal cells to rapidly reproduce and divide often leads to ___________.
kari74 [83]

Answer:

cancer.

Explanation:

cancer is caused by abnormal cell division mechanism

6 0
3 years ago
Read 2 more answers
What is the correct answer?!????
ddd [48]

Answer:

B

Explanation:

Dalton worked with mainly about the chemistry of atoms.

how do atoms combine to form various molecules.

—rather than the details of the physical, internal structure of atoms, although he never denied the possibility of atoms' having a substructure.

4 0
4 years ago
If the initial volume is 55ml and the final volume after some rocks of sandstone are added is 65ml what is the volume of the chi
AfilCa [17]

Answer:

Volume = 10ml

Density = 1/5 g/ml or 0.20g/ml

Explanation:

The rocks are 10ml since the initial volume went up by 10.

Since density = mass/volume, you divide 2 by 10.

D = 2/10

D = 1/5 g/ml or 0.20g/ml

(Unit is g/ml aka grams/millileter)

7 0
3 years ago
For the following pairs of ions, use the concept that a chemical compound must have a net charge of zero to predict the formula
Dafna11 [192]

\\ \sf\longmapsto FeP

\\ \sf\longmapsto Fe_2S_3

\\ \sf\longmapsto FeCl_2

\\ \sf\longmapsto MgCl_2

\\ \sf\longmapsto MgO

\\ \sf\longmapsto Mg_3N_2

\\ \sf\longmapsto Na_3P

\\ \sf\longmapsto Na_2S

\\ \sf\longmapsto CoO

\\ \sf\longmapsto Co_2S_3

\\ \sf\longmapsto AlCl_3

\\ \sf\longmapsto CsBr

\\ \sf\longmapsto Ti_2O_4

\\ \sf\longmapsto Ag_2S

4 0
3 years ago
Nuclear fusion in the sun involves hydrogen (H) atoms combining to form helium (He). A student claims that since the atmosphere
Lisa [10]

Nuclear fusion in the sun involves hydrogen (H) atoms combining to form helium (He). A student claims that since the atmosphere contains hydrogen, any fusion reaction on Earth would result in an uncontrolled chain reaction. What is wrong in the student’s reasoning is that the uncontrolled chain reactions can only happen during nuclear fission.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Draw all the structural isomers for the molecular formula c4h9br. Be careful not to draw any structures by crossing one line ove
    9·1 answer
  • Energy is transferred thru heat by each of the following methods EXCEPT?
    5·2 answers
  • Calculate the atomic mass of bromine. The two isotopes of bromine have atomic masses and relative abundance of 78.2 (50.69%) AMU
    14·1 answer
  • All elements have a unique atomic emission spectrum. In which of the following scenarios would this fact be most useful?
    10·1 answer
  • Which of the following elements has the lowest electronegativity?
    11·1 answer
  • All of the following methods would increase the solubility of a solid solute, except for
    11·2 answers
  • In the following description of Fe, some of the properties are physical and some are chemical. Identify which of the properties
    6·1 answer
  • Jimmy applied the distributive property to write the equation below.
    5·2 answers
  • The weak interactions between atoms that keep atoms near each other but don't tightly bind them together are called
    13·1 answer
  • What are the ways that energy<br> conversion can occur?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!