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3 years ago

What is the energy of a photon of green light with a frequency of 5.80 x 10^14/s

Chemistry

1 answer:

dedylja [7]3 years ago

8 0

I'm not understanding that much. but if i'm right the answer is 3.84 x 10^-19 J

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Rust is formed by the interaction of iron and oxygen. When rust formed on an iron nail with a mass of 100 g, the mass of the rus

DanielleElmas [232]

Answer: The correct option is A.

Explanation: Moles of Iron nail can be calculated by using the formula:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ...(1)

Given mass of iron nail = 100 g

Molar mass of iron = 56 g/mol

$\text{Number of moles}=\frac{100g}{56g/mol}$

Number of moles of iron nail = 1.79 moles

The chemical equation for the formation of rust if given by:

$4Fe(s)+3O_2(g)\rightarrow 2Fe_2O_3(s)$

By Stoichiometry of the reaction,

4 moles of iron reacts with 3 moles of oxygen gas to produce 2 moles of rust.

So, 1.79 moles of iron will react with = $\frac{3}{4}\times 1.79$ = 1.3425 moles of oxygen gas.

For oxygen gas,

Molar mass = 32 g/mol

Mass of oxygen can be calculated by using equation 1, we get

$1.3425mol=\frac{\text{Given mass}}{32g/mol}$

Mass of oxygen gas = 43 grams

Hence, the correct option is a.

6 0

3 years ago

26)Predict the products of the following chemical reaction

LiRa [457]

CaCl2 +Na2CO3 ====>Nacl+CaCO3

5 0

3 years ago

Which substance is the most common type of SOLVENT?

just olya [345]

Answer:

Water

Explanation:

Sugar and salt would both be considered solutes, and out of vinegar and water, water is the most common solvent.

Have a nice day!

5 0

2 years ago

Read 2 more answers

What is called mother liquor in a chemistry lab?

Paladinen [302]

The mother liquor is the part of a solution that is left over after it crystallizes. An example of a place you could find this is in sugar refinement.

7 0

3 years ago

Since volume and temperature are constant, this means that pressure and_____are____proportional. the sample with the largest____

IceJOKER [234]

Since volume and temperature are constant, this means that pressure and number of moles are directly proportional. the sample with the largest number of moles will have the high pressure.

Since, the ideal gas equation is also called ideal gas law. So, according to ideal gas equations,

PV = nRT

P is pressure of the sample
T is temperature
V is volume
n is the number of moles
R is universal gas constant

At constant volume and temperature the equation become ,

P ∝ nR

since, R is also constant. So, conclusion of the final equation is

P ∝ n

The number of moles and pressure of the sample is directly proportion. So, on increasing number of moles in the sample , pressure of the sample also increases.

learn about ideal gas law

brainly.com/question/4147359

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5 0

2 years ago