How many moles are in 68.5 liters of oxygen gas at STP?

Answers

Answer 1

Answer: We can solve this problem when we use the conditions of a gas at standard temperature and pressure. It has been established that at STP where the temperature is 0 degrees Celsius and the pressure is 101.325 kPa, the volume of 1 mole of gas is 22.4 L. We will use this data for the calculations.

68.5 L ( 1 mol O2 / 22.4 L O2 ) = 3.06 mol O2

Answer 2

Answer:

Explanation:

It is known that at STP, there are 22.4 L present in one mole of a substance.

Therefore, in 68.5 liters there will be 1 mol divided by 22.4 L times 68.5 L.

Mathematically, $68.5 L * (1 mol O_(2))/(22.4 L)$

= 3.05 mol

Hence, we can conclude that there are 3.05 moles present in 68.5 liters of oxygen gas at STP.

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In polar coordinates, the origin is called the _____.

Answers

In polar coordinates, the origin is called the pole. Polar coordinate system is actually a two dimensional coordinate system. In this type of system the reference point is known by the name of pole. I hope that this is the answer that you were looking for and the answer has come to your desired help.

Answer:

In polar coordinates, the origin is called the pole.

Explanation:

The position of a point in a polar coordinate system is defined by using the distance from a fixed point and an angle made with a fixed ray from that point. It is a two-dimensional coordinate system.

The polar coordinates is defined as

$P(r,\theta)$

Where, r is radius and θ is the angle with the polar axis, i.e. positive axis.

In a coordinate system (0,0) is called origin.

In polar coordinate system (0,0) is called pole.

Therefore, in polar coordinates, the origin is called the pole.

The formula for one molecule of sucrose is shown below.C12H22011
How many atoms in all are in one molecule of sucrose?

Answers

Answer:

Explanation:

There are 12 Carbons

There are 22 Hydrogens

There are 11 Oxygens.

I think the answer is either 0 or 45. But the wording is very sloppy. It is not really atoms that are present. There are ions.

Go with 45 but hold your nose when writing your answer.

What does Mg stand for in chemistry

Answers

Mg is an element that stands for Magnesium.

Mg is the chemical symbol for Magnesium.

- - In relation towards chemistry, Mg is equal to and standing for magnesium(mg).

Which element will chemically combine with fluorine to form a salt?a. carbon
b. lithium
c. neon
d. oxygen

Answers

The answer is C
Hope this helps

Smooth muscles can be found in each of the organs below exceptA. the stomach
B. the small intestine
C. the heart
D. the large intestine

Answers

c. the heart

Smooth muscles are the type of muscles that can be found in the organs like the stomach, the small intestine and the large intestine however, smooth muscles cannot be found in the heart. A smooth muscle is also called as the involuntary muscle which means that it cannot be controlled and that it contracts or expands without you telling these muscles to do so. They can also be found on the walls of the other inner organs like the bladder, uterus and blood vessels. These type of muscles has longer or almost permanent contractions compared to that of the skeletal muscles.

C, the heart, because the heart is Cardiac Muscle.

If the isotope 32S has 16 protons and 16 neutrons, how many protons and how many neutrons will the isotope 35S have? 16pr and 19 ne 19pr and 16ne 18pr and 17ne or cannot be determined

Answers

Answer:

16 protons and 19 neutrons

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