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
MissTica
3 years ago
7

4. Methane, CH4, is one carbon atom bonded to four hydrogen atoms. In order to show

Chemistry
1 answer:
oee [108]3 years ago
8 0

The answer is C. the carbon symbol C with one dot on each

the top, bottom, left, and right sides

You might be interested in
Which pair of elements would most likely bond to form a covalently bonded compound?
anastassius [24]

Answer:

two nonmetal elements join together to form covalent compounds

3 0
3 years ago
PLZ HURRY
Oxana [17]

Answer:

C

Explanation:

3 0
2 years ago
Read 2 more answers
Consider the reaction of CaCN2 and water to produce CaCO3 and NH3 according to the reaction CaCN2 + 3H2O → CaCO3 + 2 NH3 . How m
adelina 88 [10]

Answer:

56 g. Option 3.

Explanation:

The reaction is: CaCN₂ + 3H₂O → CaCO₃ + 2 NH₃

1 mol of calcium cianide reacts with 3 moles of water in order to produce 1 mol of calcium carbonate and 2 moles of ammonia

We have the mass of each reactant, so let's convert the mass to moles:

45 g. 1mol / 80.08 g = 0.562 moles of cianide

45 g. 1mol / 18 g = 2.5 moles of water

The cianide is the limiting reactant:

3 moles of water need 1 mol of cianide to react

Then, 2.5 moles of water will need (2.5 . 1)/ 3 = 0.833 moles

As we have 0.562 moles of CN⁻ we don't have enough

We can work now, on the reaction:

Ratio is 1:1. Therefore 0.562 moles of cianide will produce 0.562 moles of carbonate

Let's convert the mass to moles to find the answer:

0.562 mol . 100.08 g / 1 mol = 56.2 g

8 0
2 years ago
Sixty-five percent of the mass of bone is a compound called hydroxyapatite. sixty-five percent of the mass of bone is a compound
mafiozo [28]
True. Its simple how i remeberd was the bone has 650,000 cells and the bone has 65% hydroxyapatite
5 0
2 years ago
Nitrogen and water react to form nitrogen monoxide and hydrogen, like this: N2(g) + 2H2O(g) → 2NO(g) +2H2(g) Also, a chemist fin
Thepotemich [5.8K]

Answer:

Kc for this reaction is 0.43

Explanation:

This is the equilibrium:

N₂(g) + 2H₂O(g) → 2NO(g) +2H₂(g)

And we have all the concentration at equilibrium:

N₂: 0.25M

H₂ : 1.3M

NO: 0.33M

H₂: 1.2M

They are ok, because they are in MOLARITY. (mol/L)

Let's make the expression for Kc

Kc = ( [NO]² . [H₂]² ) / ([N₂] . [H₂O]²)

Kc = (0.33² . 1.2²) / (0.25 . 1.2²)

Kc = 0.4356

In two significant digits. 0.43

8 0
3 years ago
Other questions:
  • Which process is spontaneous? electrolysis of water into oxygen and hydrogen spreading of a strong fragrance of perfume in a roo
    15·1 answer
  • Dec
    9·1 answer
  • What is 99 dag converted cg
    14·1 answer
  • Solve and round to the correct number of significant figures: 129 ÷ 29.20
    11·1 answer
  • Plants make their own food. The chemical reaction for this process is shown
    9·1 answer
  • The correct mass of a block is 28.0 grams. A chemist measures the block
    11·1 answer
  • Explain preparation of alkanes C--C from industrial source for industrial preparation of alkane​
    14·1 answer
  • Three examples of<br> solid and gas solution
    8·1 answer
  • How you would go about separating a mixture of salt and sand. Knowing that salt will dissolve in water. Device a method to separ
    7·1 answer
  • a 1.00-l solution contains 2.50×10-4 m cu(no3)2 and 1.20×10-3 m ethylenediamine (en). the kf for cu(en)22 is 1.00 × 1020. chegg
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!