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Dominik [7]
3 years ago
8

Help me on question 5 pls

Chemistry
1 answer:
Gre4nikov [31]3 years ago
7 0
Ca +2
At -1
In +3
Sr +2
Ra +2
Fr +1
Ba +2
As -3
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Why does an egg sink in fresh water but float in salt water??
maria [59]
If an object is less dense than the water around it, it will float. Because salt water is denser than freshwater, some things float more easily in the ocean—or extremely salty bodies of the water, such as the Dead Sea. You can make your own dense water by adding salt to tap water.
5 0
2 years ago
Initially 10.0 mL of water was placed in a graduate cylinder and then a solid metal was immersed in the water in the graduated c
Ahat [919]

Answer: 1682 kg/m^3

Explanation:

the formula for density is mass/volume

to get the volume of the metal = Final Volume - Initial Volume

= 15.5 - 10.0 = 5.5mL

density of the metal = 9.25g/5.5mL = 1.682g/mL

to convert from g/mL to kg/m^3, multiply by 1000

density of metal = 1682 kg/m^3

7 0
3 years ago
Explan respinsible behaviour inthe computer​
const2013 [10]

Answer:

This can be done with Python. If you learn machine learning, you can use python to automate your computers to do things.

<h3>2 things you can do with a computer with python + more</h3>
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I hope this answers you. If not, I may change something accordingly.

8 0
2 years ago
Read 2 more answers
What happens when exhaled air passes through clear lime water?​
dimulka [17.4K]
Huh what type of question is that?!
3 0
3 years ago
Assuming that the bath contains 250.0 g of water and that the calorimeter itself absorbs a negligible amount of heat, calculate
Anvisha [2.4K]

Answer:

-3272     kJ/mol

Explanation:

Given and known facts

Mass of Benzene = 0.187 grams

Mass of water = 250 grams

Standard heat capacity of water = 4.18 J/g∙°C

Change in temperature ΔT = 7.48°C

Heat

=250 * 4.18 * 7.48\\=7816.6 \\=7.82

Heat released by benzine is - 7.82 kJ

Now, we know that

0.187 grams of benzene release = -7.82  kJ heat

So, 1 g benzine releases

\frac{ -7.82 }{0.187}\\= -41.8

kJ/g

0.187 * \frac{1}{78.108}=0.00239 mol C6H6

Heat released

= \frac{-7.82}{ 0.00239}

=-3272     kJ/mol

4 0
3 years ago
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