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melisa1 [442]
2 years ago
9

Air is mainly a mixture of nitrogen and oxygen. Which gas is the main component?

Chemistry
2 answers:
NARA [144]2 years ago
8 0

Answer:

Nitrogen is the main component because it comprises 78% of total air while oxygen comprises 21%

.

Cloud [144]2 years ago
8 0

Answer:nitrogen

Explanation:

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Which statements describe Newton and the law of universal gravitation? Check all that apply.
jonny [76]

Answer:

Newton believed that gravity was a force.

The law of universal gravitation offers a mathematical explanation for the attraction between the moon and Earth.

Newton was the first to have the idea that gravity is everywhere.

8 0
3 years ago
Read 2 more answers
19 What is the "skin" of the cell?
Alborosie

Answer:

d cell membrane:)

Explanation:

5 0
2 years ago
A patient gets 2.1 L of fluid over 19 hours through an IV. The drop factor is 20 gtt/mL.Calculate the drip rate in drops per min
Aleks [24]
<span>The rate of infusion is 2.1L/19h or 2100mL/19h (as 1L = 100 mL).
       
To convert 19 hours to minutes we multiply as follows:
   
19 hours = (19 hours) x (60 minutes/1 hour) = 1140 minutes
       
So the rate of infusion becomes:
   
2100mL /1140 min
       
In order to converted mL to drops (gtt) we multiply the rate of infusion with the drop factor to get the drip rate:
       
(2100mL/1140min) x (20 gtt/mL) = 36.8 gtt/min</span>
8 0
3 years ago
How many formula units (particles of AgNO3) are in 5.50 grams of AgNO3?
lianna [129]

Answer:

No of molcules(N)= 1.98×10^22

Explanation:

m=5.5, Mm= 167, NA= 6.02×10^23

Moles(n)= m/M= N/NA

5.5/167 = N/6.02×10^23

SIMPLIFY

N=1.98×10^22molecules

8 0
3 years ago
How many grams of O2(g) are needed to completely burn 55.9 g of C3H8(g)?
dem82 [27]

The balanced chemical reaction will be:

C3H8 + 5O2 = 3CO2 +4H2O

We are given the amount of propane gas to be burned. This will be our starting point.

 55.9 g C3H8 ( 1 mol C3H8 / 44.1 g C3H8 ) ( 5 mol O2/1 mol C3H8)(32 g O2 / 1 mol O2) = 202.81 g O2

3 0
3 years ago
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