- Standard state refers to

Chemistry

1 answer:

yulyashka [42]3 years ago

4 0

Answer: The standard state refers to 1 atm and $25^{o}C$ .

Explanation:

It is known that a chemical/substance can either be present in a solid, liquid or gaseous state.

So, when the phase of a substance like solid, liquid or gas is present at 1 atmosphere pressure and at a temperature of $25^{o}C$ then it known as standard state of substance.

Thus, we can conclude that standard state refers to 1 atm and $25^{o}C$ .

You might be interested in

Why is it important to use low flame when evaporating water from a recovered filtrate?

goldfiish [28.3K]

It is important to use low flame when evaporating water from a recovered filtrate because then the water and filtrate will not spatter and the filtrate can also be recovered after evaporating water.

If flame is not low then water as well as got spatter so it is important to use low flame so that the water and filtrate will not spatter.

4 0

4 years ago

Why does a black asphalt road become more hotter then a white cement

Alex

Because white is a color that contrasts heat but black doesn't

6 0

3 years ago

6. Why are the atomic masses of elements usually decimal numbers?

NikAS [45]

The atomic mass of elements are usually decimals as it makes the atomic masses more accurate and exact. The mass of an atom is also the weighted average of the elements known isotopes and since it’s the average, the number is most likely going to be a decimal number.

I hope this helps :)

3 0

3 years ago

An iron atom has a mass of 9.27(10)^-23 g and a cooking pot

MariettaO [177]

Complete Question:

An iron atom has a mass of 9.27*(10)⁻²³ g and a cooking pot has a mass of 0.500 kg.

Use this information to answer the questions below:

1) What is the mass of 1 mole of iron atoms? Round your answer to 3 significant digits.

The mass of 1 mole of iron atoms is 55.8 g

Why?

The key to solve this question is the use of the Avogadro's Number (NA). This number tells us the amount of atoms found in 1 mole of a substance. So, to find the mass of 1 mole of iron atoms, we're actually finding the mass of 6.022 x 10²³ atoms.

The equation we are going to use to find the mass is shown below:

$mass_{1moleFe}=mass_{1atomFe}*NA=(9.27*10^{-23}g/atom)* (6.022*10^{23})\\\\mass_{1moleFe}=55.8 g$

2) How many moles of iron atoms have a mass equal to the mass of a cooking pot? Round your answer to 3 significant digits.

The moles of iron atoms that have a mass equal to the mass of a cooking pot is 8.96 moles

Why?

In this case, we are also going to use the mass of the cooking pot. We have to find first how many atoms are there in the cooking pot, and then we will find how many moles are represented by that mole of atoms:

Atoms in the cooking pot:

$\# atoms=0.500kg*\frac{1000g}{1kg}*\frac{1 atom}{9.27*10^{-23} } =5.39*10^{24}atoms$