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tino4ka555 [31]
3 years ago
5

What is the role of light in photosynthesis?

Chemistry
1 answer:
alexgriva [62]3 years ago
7 0

Answer:

I dont know

Explanation:

but ill tell u when i do

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Missing words please help me
Elina [12.6K]

The first one is 206 then move, body, then protects, calcium,strong,blobs

8 0
3 years ago
Read 2 more answers
The volume of a gas is 450 mL when its pressure is 1.00 atm. If the temperature of the gas does not change, what is the pressure
Mekhanik [1.2K]

Answer: The pressure of the gas is 0.225 atm.

Explanation: To calculate the pressure of the gas, we use Boyle's Law.

Boyle's Law states that pressure is inversely proportional to the volume of the gas at constant temperature.

Mathematically,

P\propto \frac{1}{V}

Or,

P_1V_1=P_2V_2

where,

P_1\text{ and }V_1 are the initial pressure nd volume.

P_2\text{ and }V_2 are the final pressure andvolume

Initial conditions:

P_1=1atm\\V_1=450mL

Final conditions:

P_2=?atm\\V_2=2L=2000mL

Conversion factor: 1L = 1000mL

Putting values in above equation, we get:

1atm\times 450mL=P_2\times 2000mL\\P_2=0.225atm

8 0
3 years ago
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One isotope of carbon (C) has exactly the same mass number and atomic mass since it was used as the definition of the atomic mas
algol13

Answer:The isotope is Carbon-12 and its atomic mass is 12.

Explanation:

Mass number is the total number of protons and neutrons in a nucleus.

Atomic number is the number of protons in the nucleus of an atom.

An isotope of a chemical element is an atom that has a different mass number but the same atomic number as the element. The difference in mass number is from the number of neutrons (that is, a greater or lesser atomic mass) than the standard for that element.

Carbon-12 is an isotope of carbon it has 6 neutrons and 6 protons, giving it a mass number of 12 and atomic number of 6. Carbon-12 is a stable isotope of carbon, it has the same mass number and atomic number as carbon.

8 0
3 years ago
Which equation obeys the law of conservation of mass?
DanielleElmas [232]

4Fe + 3O2 → 2Fe2O3

i believe this is the answer

9 0
3 years ago
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How many valence electrons does a helium atom have? what is the formula of the ion formed when potassium achieves noble-gas elec
OlgaM077 [116]

> How many valence electrons does a helium atom have?

The electron configuration of Helium is simply 1s2. We see that its outermost shell is the s shell and it contains 2 electrons, therefore the number of valence electrons is also 2.

 

> What is the formula of the ion formed when potassium achieves noble-gas electron configuration?

Potassium has a electron configuration of [Ar] 4s1. To have an electron configuration of only [Ar] which is a noble gas, the one electron from 4s1 should be removed, hence:

<span>K+</span>

3 0
3 years ago
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