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In-s [12.5K]
3 years ago
13

Using all three of Newton's laws, explain how objects react to forces.

Chemistry
1 answer:
hram777 [196]3 years ago
7 0

Answer:

An object will remain at rest, an object will have a mass and force of accelerations, and for every action there is an equal and opposite reaction.

Explanation:

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What is the molarity of a solution that contains 4.87 g KCI (74.55 g/mol) dissolved in in 500.0 ml water?
lbvjy [14]

Answer:

Molarity = 0.13M

Explanation:

n=m/M = 4.87/74.55= 0.065mol, V= 500ml= 0.5dm3

Applying

n= C×V

0.065= C×0.5

C= 0.13M

8 0
3 years ago
Read 2 more answers
Punnett Squares represent the probability of traits in offspring as a result of what type of
Xelga [282]

Answer:

A

Explanation:

B is incorrect because asexual reproduction produces an offspring exactly the same as it's parent. Thus the probability does not need to be calculated.

C and D logically do not make sense since B is incorrect and A is correct. I provided the explanation why it is incorrect above.

Thus A is the correct answer.

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3 0
4 years ago
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The following models represent three different mixtures of the same solid in water,
velikii [3]

Answer:

A

Explanation:

bcuz the water in it is little

3 0
3 years ago
How many moles of Ca(OH)2 are needed to make 200.0 mL of 0.250 M solution? Ca(OH)2
Sliva [168]

Answer:

0.05 moles of Ca(OH)2

Explanation:

The formula for molarity is: mol/L = M

First, convert 200.0 mL to L.

200 mL/1000 = 0.2 L

Next, plug in the values given.

mol/0.2 = 0.250

Rearrange the equation.

mol = 0.2*0.250

mol = 0.05

If you'd like to check it, simply plug in 0.05 to mol and divide it by 0.2. In theory, you should get 0.250.

4 0
3 years ago
If 5 grams of hydrogen reacted with 40 games of oxygen to form water, how much of water would be formed?
GREYUIT [131]
2H₂ + O₂ = 2H₂O

n(H₂)=m(H₂)/M(H₂)
n(H₂)=5g/2.0g/mol=2.5 mol

n(O₂)=m(O₂)/M(O₂)
n(O₂)=40g/32.0g/mol=1.25 mol

H₂ : O₂ = 2 : 1

2.5 : 1.25 = 2 : 1

n(H₂O)=n(H₂)=2n(O₂)=2.5 mol

m(H₂O)=n(H₂O)M(H₂O)

m(H₂O)=2.5mol*18.0g/mol=45.0 g
3 0
3 years ago
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