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Alchen [17]
3 years ago
15

eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Chemistry
2 answers:
ch4aika [34]3 years ago
6 0

Answer:

wow

Explanation:

inysia [295]3 years ago
4 0

Facts

Explanation:

you woke up and chose facts

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26. Why did Mendeleev leave spaces in his periodic<br> table?
Travka [436]

Answer:

no answer

Explanation:

because he knew that eventually other elements would be discovered to fit into those spaces. The elements in the same group or column have similar properties.

5 0
3 years ago
Which of the following reactions show a decrease in entropy? a. CaO(s) + H2O(l) Ca(OH)2 (s)
Mariulka [41]
The correct answer is <span>a. CaO(s) + H2O(l) Ca(OH)2 (s)
</span><span>Decreasing in entropy means that you have to get a solid from the liquid
</span>therefore : <span>CaO(s) + H2O(l) Ca(OH)2 (s)
This formula will make it absolutely clear 
</span>(g) -\ \textgreater \ (l) -\ \textgreater \ (s) more molecules -\ \textgreater \  less molecules&#10;
7 0
3 years ago
Read 2 more answers
A graduated cylinder has a mass of 50 g when empty. When 30 mL of water is added, the graduated cylinder has a mass of 120 g. If
Verdich [7]

Answer:

2.9g/cm^3

Explanation:

We're given that the mass of the system before the rock was added was  

120g . The mass after the rock was added was  250g, so the rock's mass is 130g.

The initial volume of water in the graduated cylinder was  

30 mL , and the volume after the rock was added read  75mL , so the rock's volume is 45mL

Density = Mass over Volume.

AKA. 130g/45mL

2.9g/cm^3 (rounded)

4 0
3 years ago
Air has weight due to
Sergeu [11.5K]

Answer:

mass

Explanation:

How much does air weigh? It might not seem like it, but air has weight. Anything with mass has weight, and we know air has mass because (for example) we can feel it when the wind blows. The total weight of the atmosphere exerts a pressure of about 14.7 pounds per square inch at sea level.

-weatherstreet.com

7 0
3 years ago
How many moles are in 23 g of LICI
Leya [2.2K]

Answer:

42.394

Explanation:

trust me lol

6 0
3 years ago
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