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
noname [10]
3 years ago
10

A cleaning bottle contains 83.1 g of ammonia. How many molecules of ammonia are in the bottle?

Chemistry
1 answer:
Tasya [4]3 years ago
4 0

Answer:

2.94 x 10^2^4

Explanation:

First we need to find out how many moles of ammonia there are, using the formula: Mass = mr x moles.

We know the mass is 83.1g, now we need to find the mR of ammonia - NH3.

N = 14, H = 1, so 14 + (3x1) = an mr of 17.

Moles = mass/ mr = 83.1/17 = 4.8882

Now we can multiply the moles by avogadro's constant to find the number of molecules:

4.8882 x (6.02 x 10^2^3 ) = 2.94 x 10^2^4 molecules of ammonia

You might be interested in
Combustion analysis of a 13.42-g sample of the unknown organic compound (which contains only carbon, hydrogen, and oxygen) produ
pentagon [3]

Answer: molecular formula = C12H16O8

Explanation:

NB Mm CO2= 44g/mol

Mm H2O= 18g/mol

Moles of CO2 = 36.86/44=0.84mol

0.84mole of CO2 has 0.84 mol of C

Moles of H2O = 10.06/18= 0.56mol

1mol of H20 contains 1mol of O and 2 mol H,

Hence there are 0.56mol O and (0.56×2)mol H

Hence the compound contains

C= 0.84 mol H= 1.12mol O=0.56mol

Divide through by smallest number

C= 0.83/0.56= 1.5mol

H= 1.12/0.55= 2mol

O= 0.56/0.56= 1mol

Multiply all by 2 to have whole number of moles = 3:4:2

Hence empirical formula= C3H4O2

(C3H4O2)n = 288.38

[(12×3) + 4+(16×2)]n= 288.38

72n=288.38

n= 4

:. Molecular formula=(C3H4O2)4= C12H16O8

7 0
2 years ago
For scientific notation, when i move the decimal to the left the the exponent get bigger or smaller?
xeze [42]
I'm not sure what you mean. Besides, I feel like you're talking math.
But anyways, if you have 120 let's say
The scientific notation is 1.20 × 10^2
if you have 125000
the scientific notation is 1.25 × 10^ 5
The number of times you go left the decimal, I guess exponent increases
So yea
3 0
3 years ago
Which of the following solutions would be basic?
scoundrel [369]
E because all base have an OH in it
7 0
3 years ago
What is the capillary rise of ethanol in a glass tube with a 0.1 mm radius if the surface tension of ethanol is 0.032Jm2 and the
iragen [17]

Answer:

Explanation:

Expression for capillary rise is as follows

h = 2T / ρ g r where T is surface tension , ρ is density of liquid and r is radius of capillary tube.

T = .032 J m⁻²

ρ = .71 g / cm³

= 7100 kg / m³

r = .1 x 10⁻³ m = 10⁻⁴ m

h = 2 x .032 / (7100 x 9.8 x 10⁻⁴ )

h = .0092 m

= 9.2 mm .

5 0
2 years ago
What is the formula for the ionic compound of strontium and chlorine?
Leno4ka [110]
The formula is SrCl2. hope this helps
8 0
3 years ago
Other questions:
  • When fe(no3)2(aq) and na2s(aq) are mixed, what is the black coloured precipitate that forms?
    10·1 answer
  • List all the possible quantum-jump transitions by which the excited atom could emit a photon.
    13·1 answer
  • In the test for Cl1- and SO4 2- , explain why the addition of acid will dissolve or decompose other silver salts and barium salt
    10·1 answer
  • What is the relationship between the frequency of electromagnetic waves and their wavelengths? A. As frequency increases, wavele
    8·2 answers
  • The world produces about 3.9 billion tons of food every year. Of that amount, approximately 2.6 billion tons is consumed each ye
    11·2 answers
  • ________ is an indication of how near the air is to saturation rather than the actual quantity of water vapor in the air.
    11·1 answer
  • Why does every chemical reaction require a certain amount of activation energy?
    15·1 answer
  • g Suppose a 49. L reaction vessel is filled with 1.5 mol of NO. What can you say about the composition of the mixture in the ves
    11·1 answer
  • Help plsssssssssssssssssssssssssssssssssssssssssss
    6·2 answers
  • Is hardness an intensive or extensive physical property?.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!