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Alona [7]
3 years ago
5

A ball is rolling up and over a hill. The ball slows down as it moves from Position 1 to Position 3, and a

Biology
2 answers:
AveGali [126]3 years ago
8 0

Answer:

b!

Explanation:

belka [17]3 years ago
7 0

Answer: B. Only when the ball rolls from Position 3 to Position 5.

Explanation:

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A 0.2 M solution of NaCl contains ________ g of NaCl in 1 l of ________.
Maksim231197 [3]

Answer:

11.7 g in 1 L of water.

Explanation:

Molarity (M) or Molar concentration is a measure used in chemistry for solutes in a solution.

It is defined as mol/ L (number of moles per litre).

0,2 M means we have 0,2 mol/ L

In order to know how many grams this means we need to look up the molecular weight of the solute. In this case NaCl: 58.443 g/mol

\frac{1 mol NaCl}{58.443 g} = \frac{0.2 mol}{X g}

X= \frac{(0.2 mol x 58.433 g}{1 mol}

X= 11.69 g

The solution has 11.69 g of NaCl in 1 L of water since its an adequate polar solvent for NaCl dissolution.

8 0
3 years ago
Sewage is the most common form of pollution in rivers and streams. Please select the best answer from the choices provided T F
timurjin [86]

Answer:

Its true

Explanation:

TRUTH SPEAKS

8 0
3 years ago
Identify the parts of the female and male reproductive system and their functions. ​
Lena [83]

<u><em>Female:</em></u>

*Ovaries - release of oocytes (eggs), estrogen and progesterone.

*Oviducts (fallopian tubes) - where fertilization of the oocyte occurs to form a zygote.

*Uterus - where the zygote develops

*Cervix and vagina - allow for the entry of sperm for fertilization

<u><em>Male:</em></u>

*Testes - Releases testosterone and sperm

*Vas deferens - Passageway for sperm

*Epididymis - allows the sperm to pass from the testes and vas deferens and equips them with semen so they can survive internal fertilization

*Penis - releases sperm into the external environment for fertilization to occur

I hope I helped!

6 0
4 years ago
Read 2 more answers
D
Jobisdone [24]
False there. Is also mixed dementia
3 0
2 years ago
Which nitrogen bases are complementary to each other
storchak [24]

Answer:

Adenine and guanine are purines, while thymine, cytosine and uracil are pyrimidines.

Hope this helps! Sorry no one answered your question sooner :(

7 0
3 years ago
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