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frez [133]
2 years ago
10

What are some ways that students and staff of a school can help slow water, land, and air pollution?

Chemistry
2 answers:
Nata [24]2 years ago
6 0

Answer:

By recycling and cleaning up there community.

Explanation:

s2008m [1.1K]2 years ago
3 0
By turning off the tap when they are soaping there hands , washing only necessary needs
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Determina el pH de una solución si la concentración de H es 3.5 x 10 molar, e indicar si es acido o bas
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Explanation:

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3 years ago
Melatonin has the chemical formula C13H16N2O2. Less than 10 milligrams(0.01g) Convert the melatonin to moles
oee [108]

Answer: There are 0.000043 moles of melatonin.

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}}

given mass = 10 mg = 0.01 g

molar mass of C_{13}H_{16}N_2O_2 = 232.28 g

{\text {moles of melatonin}}=\frac{0.01g}{232.28g/mol}=0.000043moles

Thus there are 0.000043 moles of melatonin

6 0
3 years ago
What is the mass percentage of silicon?​
Mkey [24]

Answer: 46.743%

Explanation: what is the mass percentage of silicon?​ 46.743%

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8 0
2 years ago
Leadership productivity and self direction are examples off
jekas [21]
Being a leader is one of the most important things you can do. when your are a leader there are people looking up to. you know what you are supposed to be doing so if you do it one day it will pay off. someone is out there to be just like you.
4 0
3 years ago
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Which of the following is an empirical formula?<br> OP205<br> O C2H602<br> ON3F6<br> OC8H18
jarptica [38.1K]

Answer:

None are empirical formulas

Explanation:

All are actual compounds. An example of an empirical formula could be CH2O, the empirical formula for carbohydrates like glucose (C6H12O6).

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2 years ago
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