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bogdanovich [222]
3 years ago
7

Please help me. I'll give brainliest. I am stuck. True or false Q.

Chemistry
1 answer:
belka [17]3 years ago
5 0
I believe your answer is true! Hope this helps!
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What is the mass in 6.34x10^23 molecules of calcium chloride
Liono4ka [1.6K]

Answer : The mass of calcium chloride is, 116.84 grams

Solution : Given,

Molar mass of calcium chloride, CaCl_2 = 110.98 g/mole

Number of molecules of calcium chloride = 6.34\times 10^{23}

As we know that,

1 mole of calcium chloride contains 6.022\times 10^{23} molecules of calcium chloride

or,

1 mole of calcium chloride contains 110.98 grams of calcium chloride

Or, we can say that

As, 6.022\times 10^{23} molecules of calcium chloride present in 110.98 grams of calcium chloride

So, 6.34\times 10^{23} molecules of calcium chloride present in \frac{6.34\times 10^{23}}{6.022\times 10^{23}}\times 110.98=116.84grams of calcium chloride

Therefore, the mass of calcium chloride is, 116.84 grams

6 0
3 years ago
The arrows show the changes of state.
Romashka [77]

Answer:

condensation

Explanation:

when gases change to liqud it condenses.This occurs when the temperature is lowered

3 0
3 years ago
A filament at which temperature would have the most light absorbed by a piece of yellow glass?
stepladder [879]
Soft light (answer) is the filament between (2700k-3000k). 
 The higher the kelvin number the whiter the light.

3500k-4100k is bright white/cool white

5000k-6500k is daylight 

\and those are the three primary colors of color temperature
6 0
3 years ago
1. Alexa and her family travelled 5 hours south east on 1-45 to crystal
Gre4nikov [31]

Answer:

Average speed  = 68 mph

Explanation:

Given that,

Total distance traveled by the family, d = 340 miles

The family traveled 5 hours southeast.

We need to find her average speed. The speed of an object is given by the total distance covered divided by time taken. So,

v=\dfrac{d}{t}

Put all the values,

v=\dfrac{340}{5}\\\\v=68\ mph

So, her average speed is equal to 68 mph.

5 0
3 years ago
During oxidation what happen
Agata [3.3K]
Oxidation is when a substance gains oxygen molecules. For example when hydrogen reacts with oxygen it forms H₂O. The H₂ has been oxidised.
4 0
3 years ago
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