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alisha [4.7K]
3 years ago
13

What property of water is primary for living organisms? (SC.6.E.7.4) *

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

Answer:

It is liquid at most temperatures on Earth.

joja [24]3 years ago
3 0
Answer: it is liquid at most temperatures on earth.

Step-by-step explanation:
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3 years ago
How many moles of atoms are in 6.00 g of 13C?
Lyrx [107]

Answer: 0.462 moles

Explanation: 13C indicates an isotope of carbon and its mass number is 13. It means the mass of 1 mol of 13C is 13 gram.

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To calculate the number of moles we divide the given grams by the mass of 1 mol of the element. The set could be shown easily using dimensional analysis as:

6.00gram(\frac{1mol}{13gram})

= 0.462 moles

So, there will be 0.462 moles of atoms in 6.00 grams of 13C.

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4 years ago
What is the volume of 0.250 m hydrochloric acid required to react completely with 20.0 ml of 0.250 m ca(oh)2?
Soloha48 [4]
The balanced equation for the above neutralisation reaction is as follows;
Ca(OH)₂ + 2HCl ----> CaCl₂ + 2H₂O
Stoichiometry of Ca(OH)₂ to HCl is 1:2
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according to molar ratio of 1:2
number of HCl moles required = 2 x number of Ca(OH)₂ moles reacted
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there are 0.250 mol  in volume of 1 L
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40.0 mL of 0.250 M HCl is required
5 0
3 years ago
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