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MariettaO [177]
3 years ago
15

What are three things that living things need to live?

Chemistry
2 answers:
kkurt [141]3 years ago
8 0

Answer:

the first the Question is what do you need to live then that your answer

food,water,air ;]

r-ruslan [8.4K]3 years ago
4 0

Answer:

Water, air, and food.

Explanation:

All living things need air water and food to live.

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A person tries to heat up her bath water by adding 5.0 l of water at 80c to 60 l of water at 30c. what is the final temperature
Sophie [7]
We can calculate the final temperature from this formula :

when Tf = (V1* T1) +(V2* T2) / (V1+ V2)

when V1 is the first volume of water = 5 L 

and V2 is the second  volume of water = 60 L

and T1 is the first temperature of water in Kelvin = 80 °C +273 = 353 K

and T2 is the second temperature of water in Kelvin =  30°C + 273= 303 K

and Tf is the final temperature of water in Kelvin 

so, by substitution:

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     = 1765 + 18180 / 65 L

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8 0
3 years ago
What is the mass percent of nitrogen in:<br><br> 1. N2O<br> 2. NO<br> 3. NO2<br> 4. N2O2
Temka [501]
We’re going to use the mass percent formula shown below:



For the percent by mass N, we’re going to rewrite the equation as:

98% (271 ratings)
View Complete Written Solution
Problem Details
Calculate the mass percent composition of nitrogen in each nitrogen-containing compound:

c. NO2
5 0
2 years ago
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