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Nezavi [6.7K]
3 years ago
9

HELP ME NOW PLEASE 80 points

Chemistry
2 answers:
Ainat [17]3 years ago
5 0

Answer:

id.k sorry

Explanation:

Law Incorporation [45]3 years ago
4 0

Answer:

1. Algae

2. Insects

3. Crayfish

4. Trout

5. Herons

Explanation:

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Explain why sharpening a pencil is a different type of physical change it freezing water to make ice cubes
laila [671]
Because you can't make the pencil go back to normal form
8 0
4 years ago
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Measuring levels of pollutants, such as nitrogen oxide in the atmosphere, is an example of chemistry research that ____.
Paraphin [41]

Answer:

aims to benefit the environment is the correct answer.

Explanation:

The goal of Aims to the benefits environment is to provide everyone information, values, and skills which are required to preserve and protect the environment.

Aims to benefit the environment includes

  • To decrease emissions and reduce pollution.
  • To improve waste management methods.
  • To reduce the consumption of natural sources.
  • To minimize noise and different nuisances.

3 0
3 years ago
What is the molar mass of Ca(NO3)2
artcher [175]
Ca=40
N=14
O=16
Ca=40
N=14x2=28
O=6x16=96
molar mass=40+28+96
molar mass=164g/mol

7 0
3 years ago
Read 2 more answers
Commercial products commonly report concentration in terms of "percentage." Using this
Stella [2.4K]

The answer to the question is 0.8055 as the answer should not include units in it.

Molarity (M) = n/v

n = moles of solute

v = liters of solution

According to question

1% solution → 1 gram of solute for 100 milliliters of solution

2% solution → 2 grams of solute for 100 milliliters of solution

6% NaClO solution → 6 grams of NaClO (solute) for 100 milliliters of solution

Molar mass of NaClO = (22.98 + 35.5 + 16)g/mol = 74.48 g/mol

Atomic mass of Na = 22.98 g/mol

Atomic mass of Cl = 35.5 g/mol

Atomic mass of O = 16 g/mol

1 mol NaClO = 74.48 grams NaClO

74.48 grams NaClO = 1 mol NaClO

6 grams NaClO = (1×6) / 74.48 mole = 0.08055 mole

As unit molarity is mole / liter

So 100 milliliters = 0.1 liters

1 liter = 1000 milliliters

100 milliliters = 100/1000 liters = 0.1 liters

Molarity of NaClO = moles of solute (NaClO) / liters of solution or volume of solution

Molarity of NaClO = 0.08055 / 0.1 mole/L =  0.8055 mole/L

As in question it is mentioned that 'Do not type units into your answer'

So, Molarity of NaClO in clorox bleach = 0.8055

Thus we find out the value of molarity of NaClO in Clorox bleach which came out to be 0.8055 as we dont have to give the answer with units.

Learn more about Molarity here:

brainly.com/question/27208890

#SPJ10

8 0
2 years ago
How many liters of water vapor, at stp, are produced by the combustion of 12.0 g of methane?
erastovalidia [21]
Answer is: 33,6 liters of water vapor.
Chemical reaction: CH₄ + 2O₂ → CO₂ + 2H₂O.
m(CH₄) = 12 g.
n(CH₄) = m(CH₄) ÷ M(CH₄)
n(CH₄) = 12 g ÷ 16 g/mol = 0,75 mol
from reaction: n(CH₄) : n(H₂O) = 1 : 2
n(H₂O) = 1,5 mol.
V(H₂O) = n(H₂O) · Vm
V(H₂O) = 1,5 mol · 22,4 mol/dm³
V(H₂O) = 33,6 dm³.
8 0
3 years ago
Read 2 more answers
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