What is STP in Chemistry in English 2022

Hey, guys. Michael from Cookham Street.  We'll be going over some practice problems involving STP. The standard temperature is zero degrees Celsius or 273 degrees Kelvin, and the standard pressure is one ATM, which is also 760-millimeter meters Mercury or 760 Torres.

But you'll probably most likely see just one ATM and zero degrees Celsius or 273 deg Kelvin. So if both the temperature and the pressure condition are met, then you're considered to be at STP and at STP. This relation holds true that 1 Mol of gas will take up 22.4 liters of volume regardless of what type of gas it is. The main conversion that you need to know for SCP is this conversion right here about how to convert from moles to leaders? If you're given a mole of a gas Hcp and you want to find the leaders, just multiply by 22.4.

Or if you have the leaders SCP and you want to figure out the number of moles, then just divide by 22.4. All right. Now let's take a look at a couple of practice problems. So the first one is asking what volume will one point 27 moles of helium gas occupy? Sep.

We're at SDP, we're given moles and we want to figure out what volume. So we're doing this conversion where we have moles and we want to convert to volume. So we just have to go one point 27 multiplied by 22.4, and then that will give us 28.4 liters. And that'll be the answer. That's how much volume?

How many liters? One point 27 miles will take up. Now, you have to show your work with dimensional analysis, and this is what you would do. One point 27 moles multiplied by 22.4 liters per one Mo, and then you'll get 28.4. Okay, let's take a look at the next problem.

In the next problem, we have to determine the volume that's occupied by two-point 34 grams of carbon dioxide at STP. Once again, we're STP, we have to figure out the volume, and then we're giving grams from grams. What we can do is we can convert to moles and it's just going to be a molder conversion again. So we'll first take the two-point 34 grams of CO2 and convert it to moles, which is just dividing by the molar mass. So it's put 1 Mol of carbon dioxide on top divided by the molar mass of carbon dioxide, which is approximately 44.1 gram of carbon dioxide, and then that will cancel out if you're having trouble with the grams to mold conversion.

Then once we have Mows, we can just multiply the Spy 22.4, and then I'll give you one point 19 liters. That's how many liters the 2.34 grams of carbon dioxide will take up at STP let's take a look at our last example so in this last example we have an R and gas that is at STP and then it's taking up 56.2 liters we have to determine the moles of the argon as well as the mass of the argon. At this time we're giving the liters and we have to go to moles so we're going backward meaning we're just going to divide by 22.4 so we'll just take 56.2 liters of 56.2 and we'll divide by 22.4 and then that'll give us two points 51 moles of argon then to convert moles to mass we just multiply by the molar mass so just be two-point 51 miles of argon multiplied by the molar mass of argon over 1 Mol of argon let's take a look at a period table and see what the molar mass argon is.

Molar mass argon is pretty much 39 points 95 so we'll just take two-point 51 multiplied by 39 points 95 and then that will give us 100 grams of argon and that's it that's how you would do problems evolving STP So once you've established your STP address says STP versus one ATM 30 degree Celsius then you can use this shortcut to help you convert between moles and leaders. If you want to learn how to ace chemistry if you want to learn what's the best way to study for this class if you want to learn some neat tricks and tips for taking your exam and doing better in them you should head over to my website and get this brief guide twelve secrets to acing chemistry you can head over to www. Dot sonochemistry. Comcmscrets I'm going to include a link in the description below check it out I think it's really going to help you and you're gonna like it until next time keep working hard and continue the good work.