Answers by visitors named: Zachary

20?

Do I have to add q of the caloriemeter to that?

In the second half of the experiment 3mL of hydrochloric acid and 30mL of barium chloride were reacted with a 0.7g sample of alum to get barium sulfate. The question says based on the mass of barium sulfate (0.46g), calculate the mass of sulfate in your sample of alum.

Can you give me an idea of what to write for a veteran card

I found the moles of CO2 and I got 1.47. 85.4 L ethanol * .79 g/cm3 = 67.5g ethanol. 67.5/(12+12+5+16+1)= 1.47 moles ethanol. 1.47 moles C2H5OH *(2 moles C2H5OH/ 2 moles CO2) = 1.47 moles CO2. What do I use for the volume? do I use the volume of the bottle, the volume of the bottle minus the volume of the ethanol, or the volume occupied by the grape juice?

Sorry, I made a mistake. 85.4 mL = .0854 L. .0854 L * .79 g/cm3 = .0675g. .0675/46(MM of C2H5OH) = .0147 moles ethanol. .0147 moles ethanol = .0147 moles CO2.

I'm still not sure which volume to use though. would it be 825 mL, 825mL - 85.4 mL, or 712 mL?

Okay. I'll try both. 825mL - 712= 113. You have to convert mL to L in order to use the PV = nRT correct? if so,113mL=.113L P(.1130) = 1.47 moles CO2 * .0821 * 303 K .1130P=36.57 P = 323.6 atm -OR- 825-85.4 = 739.6 mL = .7396L .7369P=1.47(.0821)(303) .7369P=36.57 P=49.6atm

The first one was correct! I just used the incorrect number of sig figs. Thank you so much!

How exactly do you get pH from Ka?

Each element is addressed and two examples from the texts is provided

That was a question

both answers are wrong correct answer = $170,000

3×50=150

1. A force that makes the net force on an object zero. 2. It is equal in magnitude and opposite in direction. 3. An moving object in equilibrium continues at a constant velocity. 4. 5N 5. 8.5N 6. 24N 7. 90N

1. A force that makes the net force on an object zero. 2. It is equal in magnitude and opposite in direction. 3. An moving object in equilibrium continues at a constant velocity.

$480

1) Earth's gravity acts on people inside a space station orbiting the earth. 2) It applies to any two objects at any location. 3) the entire earth, located one earth radius away 4) 2.8 days 5) 200 N 6) 1.67 x 10^-9 N 7) 7.70 km/s I just took this quiz. These are the answers.

Anatomy is such a superior or supreme hard-course taking in college. Anatomy is all about the human body, bones, digestive system, and metabolism. Biology is worth Mr. Meredith's point to allow everyone to catch up with their course to pass with 100% to receive all A's. This project is worth 40 points because the point is, the reservoirs needed evidence to provide food, animals, fossil fuels, decompose rs, plant, etc. This confusion will lead to Ms. Hughes for explicit 300 game bowling experience. Baseball is kind of a big upset to play 7 home runs in a row. Spoon needed boys to eat peanut butter because college providers crossed the railroad tracks. The music was on yesterday from Mr. Meredith and Jordan-paddled with a nice tall Asian lady. Therefore, Allen threw his phone in the garbage and a 22-year old Asian girl, Isabelle Phan who picked up his phone from the iPhone app store.

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correct answer = $170,000 100%

It is important to make sure the decimal point is in the correct spot because it will keep the numbers aligned; ones to ones, tenths to tenths, hundredths to hundredths, and so on. For example, 2.34+3.28 is 5.62 but without the decimal point, the sum would be 562. That's very confusing because the two numbers are nowhere close to each other. That's why making the decimal point in the correct spot is very important.

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i got 3 months as well but it says i did it wrong.

what is it

Why does nobody use this chat anymore

Not true

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