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andreev551 [17]
3 years ago
5

Please Help Me!!!I will mark Brainliest!!!

Chemistry
1 answer:
il63 [147K]3 years ago
6 0

Answer:/

Explanation:

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What is the molarity of a solution if you take 12.0 grams of ca(no3)2 and mix it with 0.105 l of water?
Lunna [17]
The  molarity  of  a solution  if it tale 12.0   grams  of  Ca(No3)2  is  calculated as below

molarity =  moles/volume in liters
 moles = mass/molar mass =  12.0 g/ 164 g/mol =  0.073 moles

molarity is therefore  = 0.073/0.105 = 0.7 M 
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2. The heart

Explanation:

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This cavity actually contain three space each round with mesothelium , pleural cavity and precardial cavity.

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the more particles a substance has at a given temperature the more thermal energy it has true or false
Flauer [41]

Answer:

\huge\boxed{\sf True}

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Temperature and thermal energy are in a direct proportion which means that if temperature of a substance increases, its thermal energy also increases and vice versa.

\rule[225]{225}{2}

Hope this helped!

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true

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