Which organelle allows plants to make their own food?

If two reactions sum to an overall reaction, and the equilibrium constants for the two reactions are K1K1 and K2K2, what is the

inessss [21]

Answer: The equilibrium constant for the overall reaction is $K_1\times K_2$

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios.

a) $A\rightarrow B+C$

$K_1=\frac{[B]\times [C]}{[A]}$

b) $B+C\rightarrow D$

$K_2=\frac{[D]}{[B]\times [C]}$

For overall reaction on adding a and b we get c

c) $A\rightarrow D$

$K_3=\frac{[D]}{[A]}$

$K_3=K_1\times K_2=\frac{[B]\times [C]}{[A]}\times \frac{[D]}{[B]\times [C]}$

$K_3=K_1\times K_2=\frac{[D]}{[A]}$

The equilibrium constant for the overall reaction is $K_1\times K_2$

7 0

3 years ago

What’s the difference between the three types on natural radioactivity

Lostsunrise [7]

Answer:

Explanation:

Alpha beta and gamma radiations are the examples of ionizing radiations. When an atom is an excited state and having high energy, the atom is in unstable state. The excess of energy is released by the atom to get the stability. The released energy is in the form of radiations which may include alpha, beta, gamma, X-ray etc.

Properties of alpha radiation:

Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number 4 less than and atomic number 2 less than the starting atom.

Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

These radiations can be harmful for the human if these are inhaled.

These radiations can be stopped by a piece of paper.

₉₂U²³⁸ → ₉₀Th²³⁴ + ₂He⁴ + energy

Beta radiations:

Beta radiations are result from the beta decay in which electron is ejected. The neutron inside of the nucleus converted into the proton an thus emit the electron which is called β particle.

The mass of beta particle is smaller than the alpha particles.

They can travel in air in few meter distance.

These radiations can penetrate into the human skin.

The sheet of aluminium is used to block the beta radiation

⁴₆C → ¹⁴₇N + ⁰₋₁e

The beta radiations are emitted in this reaction. The one electron is ejected and neutron is converted into proton.

Gamma radiations:

Gamma radiations are high energy radiations having no mass.

These radiations are travel at the speed of light.

Gamma radiations can penetrate into the many materials.

These radiations are also used to treat the cancer.

Lead is used for the protection against gamma radiations because of its high molecular density.

The lead apron are used by the person when treated with gamma radiations.

3 0

3 years ago

Both diamond and graphite (i.e. pencil lead) consist of carbon atoms. They are only different in their crystalline structures. O

prisoha [69]

Answer:

Moles of carbon atoms = 3.33 × $10^{-6}$ mol

No. of atoms of C in Diamond = 2.007 × $10^{28}$ atom

Atoms of graphite = 6.27 × $10^{23}$ Atoms

Explanation:

given data

Cost of 0.2g of diamond = $5000

Cost of 25 g of graphite = $ 2

solution

we know cost of 0.2g of diamond is $ 5000 so that for 1$

if buy 1$ = $\frac{0.20}{5000}$

1$ = 4.0 × $10^{-5}$ g Carbon

and Moles of carbon atoms is express as

Moles of carbon atoms = Given mass of Carbon ÷ atomic mass of C .........1

Moles of carbon atoms = 4.0 × $10^{-5}$ g/ 2.0g

Moles of carbon atoms = 3.33 × $10^{-6}$ mol

and

No. of atoms of C in Diamond = No. of moles × Avogadro NO ..............2

No. of atoms of C in Diamond = 3.33 × $10^{-6}$ mol × 6.022 × $10^{28}$

No. of atoms of C in Diamond = 2.007 × $10^{28}$ atom

Graphite

and wew have given Cost of 25 g of graphite is $2 so for but 1$ we get

for buy $1 = 25÷2 = 12.5 g Of graphite

Moles of graphite = 12.5÷12 = 1.04 mol

Atoms of graphite = 1.04 × 6.022 × 1023

Atoms of graphite = 6.27 × $10^{23}$ Atoms

6 0

2 years ago

Which items below are properties of matter? [select all that apply]

8_murik_8 [283]

Answer:

Solubility, length, hardness, color, mass, density, weight, volume, boiling, and point.

Explanation: Hope this helps

4 0

3 years ago

A contains 2.60g of impure h2so4 in 5oocm³ of a solution 5.30g of na2co3 in 1.00dm³ of solution

Tatiana [17]

Answer: a. 0.05mol/dm3

bi. 0.045mol/dm3

bii. 4.41g/dm3

c. 84.8%

Explanation:Please see attachment for explanation

3 0

3 years ago