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oksano4ka [1.4K]
2 years ago
11

Help?? help for mee??? maybe? what if i said...please????

Chemistry
1 answer:
Bezzdna [24]2 years ago
3 0

Answer:

c

Explanation:

because they transfer an electron the sodium ion has a positive charge, and the chlorine ion has a negative charge so one gives off positive and one gives of negative

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SOVA2 [1]

Answer:

Option 2

Explanation:

3 0
3 years ago
You’re sitting at a car race and the cars sound differently when they approach as opposed to when they are moving away. Why migh
bulgar [2K]

Answer:

I have no clue this qestion is kinda stumping but it a really good question it got me thinking but i don't know if there is a right answer

Explanation:

I don't know

5 0
2 years ago
The molar madd of Ca(OH)2
Nonamiya [84]
What you have to do is find a periodic table and add the mass of each atom that the compound is made of.

Ca= 40.1
O= 16.0
H= 1.01

keep in mind that you have to also account for how many atoms of each there are in the molecule. for example, in Ca(OH)2, there are one Ca, two O and two H

so the molar mass of Ca(OH)2= 40.1 + (2 x 16.0) + (2 x 1.01)= 74.12 g/mol
8 0
3 years ago
PLEASE ANSWER
Vikki [24]
D) refracted
because , the light changes direction.. causing the penny to look bigger than it is.
4 0
3 years ago
The gasses in a hair spray can are at temperature 300k and a pressure of 30 atm, it
Sergeeva-Olga [200]

Answer:

900 K

Explanation:

Recall the ideal gas law:

\displaystyle PV = nRT

Because only pressure and temperature is changing, we can rearrange the equation as follows:
\displaystyle \frac{P}{T} = \frac{nR}{V}

The right-hand side stays constant. Therefore:

\displaystyle \frac{P_1}{T_1} = \frac{P_2}{T_2}

The can explodes at a pressure of 90 atm. The current temperature and pressure is 300 K and 30 atm, respectively.

Substitute and solve for <em>T</em>₂:

\displaystyle \begin{aligned} \frac{(30\text{ atm})}{(300\text{ K})} & = \frac{(90\text{ atm})}{T_2} \\ \\ T_2 & = 900\text{ K}\end{aligned}

Hence, the temperature must be reach 900 K.

7 0
2 years ago
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