3 years ago

PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2 answers:

8 0

2. is point source

3. is non point source

4 0

QUESTION 2: POINT SOURCE
QUESTION 3:NONE POINT SOURCE

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zalisa [80]

Answer: There are $2.29\times 10^{23}$ formula units

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{36.0g}{95g/mol}=0.38moles$

1 mole of $MgCl_2$ contains = $6.023\times 10^{23}$ formula units

Thus 0.38 moles of $MgCl_2$ contains = $\frac{6.023\times 10^{23}}{1}\times 0.38=2.29\times 10^{23}$ formula units

Thus there are $2.29\times 10^{23}$ formula units

6 0

3 years ago

ASHA 777 [7]

It would be 7 because the acid and base cancel out each other

8 0

4 years ago

Jlenok [28]

I think the right answer for this question is option A. The energy absorbed so the mass will be increased.

6 0

3 years ago

adoni [48]

I think that it is true to the bone

8 0

3 years ago

professor190 [17]

Answer: the baseball bat transfor its energy in the ball.

Explanation: you hit it with one and find out and tell me what you think what happen.

3 0

3 years ago