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ad-work [718]
3 years ago
13

Select True or False. The Sun is like the stars we see at night. False True

Chemistry
2 answers:
Annette [7]3 years ago
4 0

Answer:

yes

Explanation:

Sun is a star not a planet.

OverLord2011 [107]3 years ago
4 0

Yes true I guess but its just a lot closer

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Which best describes an element? A pure substance. A type of a mixture. A pure compound. An impure substance.
mr Goodwill [35]

a pure compound because an element is untouched and is just itself

7 0
3 years ago
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If 75 g of liquid water in a calorimeter changes temperature from 25 degrees C to 75 degrees C how much heat was transferred
Assoli18 [71]
Heat=mcDeltaT
heat=(75g)(1.00)(50)
heat=3750
3 0
3 years ago
Need these 2 answered asap pls
Kitty [74]

Answer:

im not a brain wiz but i think 20

Explanation:

3 0
2 years ago
How many grams of tris (mw 121.1) would you need to prepare 100 ml of a 100 mm tris solution? _________ grams?
Tems11 [23]

Molarity = (Mass/ molar mass) x (1/ volume of solution in Litres)

Mass = Molarity x molar mass x  volume of solution in Litres

Molarity of Tris = 100 mM = 0.1 M

volume of Tris sol. = 100 mL = 0.1 L

molar mass of Tris = 121.1 g/mol

Hence,

mass of Tris = Molarity of Tris x molar mass ofTris x volume of Tris solution

= 0.1 M x 121.1 g/mol x 0.1 L

= 1.211 g

mass of Tris = 1.211 g


7 0
3 years ago
PLEASE ANSWER + BRAINLIEST !!!
MA_775_DIABLO [31]
Hope this would help you

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