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olganol [36]
3 years ago
13

Carbon is the most common element in the human body. True False state the reason

Chemistry
2 answers:
djyliett [7]3 years ago
6 0
False, the human body consists mostly of water
antoniya [11.8K]3 years ago
3 0
False, The human body is mostly water, so the most common element is either hydrogen or oxygen.

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The model below shows the equation that represents how hydrogen and oxygen combine to form water. In this chemical reaction, the
Effectus [21]

Answer:

true

Explanation:

because they are balance

5 0
2 years ago
2A → B + C
Leya [2.2K]

Answer:

The correct answer is option 3.

Explanation:

2A → B + C

First trial ;

[A] = x , Rate of the reaction = R

Rate law of the reaction can be written as:

R=k[x]^a..[1]

Second trial ;

[A] = 3x , Rate of the reaction = R' = 9R

Rate law of the reaction can be written as:

R'=k[3x]^a

9R=k[3x]^a..[2]

[1] ÷ [2]

\frac{R}{9R}=\frac{k[x]^a}{k[3x]^a}

a = 2

Rate  of the reaction : R=k[A]^3

The order of the reaction is 2. This is because in the rate law expression the the power of the concentration of reactant A id 2.

8 0
3 years ago
What is the answer please and why is this answer
Snowcat [4.5K]

Answer:

it is B because the other answers logically dont fit in

5 0
3 years ago
a block of iron has the dimensions of 3.00 cm x 3.00 cm x 3.00 cm. it has a mass of 213 g. what is its density? a. 638 g/cm3 b.
Juliette [100K]
Volume = 3 cm × 3cm × 3cm
             =  27 cm ³

Mass  =  213 g

Density  =  \frac{MASS}{VOLUME}
 
              = <span>\frac{213 g}{27 cm ^{3} }
</span> 
<span>              =  7.89 g / cm³

Thus answer is D.</span>
8 0
3 years ago
Read 2 more answers
What types of material might have survived 85 years of weather? answer?
Mashutka [201]
Hey You!

Metal and Minerals may have survived 85 years of weather.
5 0
4 years ago
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