2 years ago

Question 3

Chemistry

2 answers:

meriva2 years ago

8 0

Answer:

We are dependent on plants and plants need CO2 from enviromen

Explanation:

Liono4ka [1.6K]2 years ago

3 0

Answer:

These are necessary for breathing, drinking etc.

Even they are basic components of our body such as present in DNA etc.

#$#THANK YOU #$#

You might be interested in

Why does the reaction proceed more quickly when the surface area is increased?

Gelneren [198K]

When particles collide with the surface of the solid.

3 0

2 years ago

The time necessary for the decay of one- half sample of a radioactive substance is a _____. mass defect daughter half life nucli

Mazyrski [523]

Answer: half life

Explanation: Radioactive decay follows first order kinetics and the time required for the decay of a radioactive material is calculated as follows:

$t=\frac{2.303}{k}\hspace{1mm}log\frac{x}{a}$

t= time required

k= disintegration constant

x= amount of substance left after time t

a= initial amount of substance

when one half of the sample is decayed, one half of the sample remains and t can be represented as $t_{1/2}$

at $t= t_{1/2}$ , $x=\frac{a}{2}$

$t_{1/2}=\frac{2.303}{k}\hspace{1mm}log\frac{a/2}{a}$

$t_{1/2}=\frac{0.693}{k}$

3 0

3 years ago

Read 2 more answers

Số oxi hóa của các nguyên tố: Fe(OH)2; Fe(OH)3; FexOy; Zn(OH)2 là gì

BARSIC [14]

Answer:

esfsef

Explanation:

esfsefseF

7 0

2 years ago

What is found in a plant cell but not in an animal cell

yan [13]

Since plants are able to do Photosynthesis while animals are not, it would be the part of the plant that does it.

so the answer would be Chloroplast.

8 0

3 years ago

What is the empirical formula for a compound that has 57.5%

Rainbow [258]

Answer:

Explanation:

use %composition given to calculate emperical 4mular

8 0

3 years ago