answer.
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
IRINA_888 [86]
1 year ago
7

HELP PLZ!!! A sample contains only the compound CaCl2 and water. When it is dried, its weight decreases from 5.00g to 4.24g. Wha

t is the mass percentage of water in the original sample? Round to three significant figures.
Chemistry
2 answers:
steposvetlana [31]1 year ago
7 0

Answer:

Mass of water is 18.01528 g/mol. I hope this helps

Explanation:

AfilCa [17]1 year ago
5 0

Answer:is 15.2%

Explanation:

Got it wrong and this the correct answer it told me

You might be interested in
4.1 kg of a plastic, used to make plastic bottles, has a carbon footprint of 6.0 kg of carbon dioxide.
Debora [2.8K]

Answer:

The carbon footprint of one plastic bottle of mass 23.5 g is 34.390 g.

Explanation:

The carbon footprint of one plastic bottle can be estimated by simple rule of three. That is:

x = \frac{23.5\,g}{4100\,g}\times 6000\,g

x = 34.390\,g

The carbon footprint of one plastic bottle of mass 23.5 g is 34.390 g.

4 0
1 year ago
Air tends to move from _____.
beks73 [17]
A: The Equator To The Poles

4 0
2 years ago
Read 2 more answers
To burn 1 molecule of C5H12 to form CO2 and H2O (complete combustion), how many molecules of O2 are required?
viva [34]
C5H12 + 8 O2 → 5 CO2 + 6 H2O 

8 molecules of O2 are required.
5 0
1 year ago
Read 2 more answers
A sample of gas occupies 10 L at STP. What
puteri [66]

Pressure is 5.7 atm

<u>Explanation:</u>

P1 = Standard pressure = 1 atm

P2 = ?  

V1 = Volume = 10L

V2= 2.4L

T1 = 0°C + 273 K = 273 K

T2 = 100°C + 273 K = 373 K

We have to find the pressure of the gas, by using the gas formula as,

$\frac{P 1 V 1}{T 1}=\frac{P 2 V 2}{T 2}

P2 can be found by rewriting the above expression as,

$P 2=\frac{P 1 \times V 1 \times T 2}{T 1 \times V 2}

Plugin the above values as,

$P 2=\frac{1 \text {atm} \times 10 L \times 373 \mathrm{K}}{273 \mathrm{K} \times 2.4 \mathrm{L}}=5.7 \text { atm }

4 0
2 years ago
how many moles of cesium carbonate will be produced when 5.34 moles of cesium reacts with iron iii carbonate
irga5000 [103]

Answer: 2.7moles

Explanation:

6Cs + Fe2(CO3)3 —> 3Cs2CO3 + 2Fe

From the equation,

6moles of Cs produced 3 moles of Cs2CO3.

Therefore, 5.34 moles of Cs will produce = (5.4x3)/6 = 2.7moles of Cs2CO3

6 0
2 years ago
Other questions:
  • Please help with these three questions.
    15·1 answer
  • A sample of oxygen gas (o2) was found to effuse at a rate equal to three times that of an unknown gas. the molecular weight of t
    10·1 answer
  • List three physical properties of copper
    14·1 answer
  • 3. A 0.500 g sample of nitrogen gas combines with 1.140 g of oxygen gas to form NO2. If the atomic mass of oxygen is 16.000, cal
    6·2 answers
  • You are standing on the rim of a canyon, you drop a rock and in 7.0 seconds hear the sound pof it hitting the bottom, how deep i
    13·1 answer
  • What is the specific heat (J/g°C) of a metal object whose temperature increases by 3.0°C when 17.5 g of metal was heated with 38
    13·1 answer
  • What is an azeotrope? 2. Under what conditions is it better to perform a steam distillation (instead of, say, a simple distillat
    8·1 answer
  • The standard reduction potentials for two half-cells involving iron are: given below. Fe2+ (aq) + 2e– ® Fe (s) Eο = –0.44 V Fe3+
    6·1 answer
  • George is writing a newspaper article about the fire at the local library. His introductory paragraph has an example of conserva
    6·2 answers
  • Identify the true statements about surface tension. Molecules along the surface of a liquid behave differently than those in the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!