2 years ago

Which of these celestial objects is the smallest

Chemistry

2 answers:

Verizon [17]2 years ago

7 0

Answer:

Explanation:

I looked it up lol.

RideAnS [48]2 years ago

6 0

Answer: Dwarf planet are the smallest celestial bodies

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A sample of helium has a volume of 50.00 L at STP. How many helium atoms are in the sample? Show work

Setler79 [48]

Answer:

Explanation:

molar volume at STP=22.4 L

given volume=50.0 L

number of moles=given volume/molar volume

number of moles=50.0/22.4

number of moles=2.2

1 mole of helium =6.023*10^23 atoms

2.2 moles of helium =6.023*10^23*2.2=1.3*10^24

therefore 50.0 L of helium contain 1.33*10^24 atoms

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2 years ago

4.00 g of O2 gas are in a sealed, 2.00 L gas canister at 22.0 °C what is the pressure inside this container (in atm)?

Volgvan

Answer:

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Explanation:

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Dmitriy789 [7]

Answer:

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2 years ago

Adding more baking soda and vinegar to the bag in the Air Bag Lab resulted in faster production of gaseous products True False

nika2105 [10]

Answer:

True

Explanation:

The more of each substanse that you add to the bag will cause it to produce faster and more gas.

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2 years ago

What volume of 24% trichloroacetic acid (tca) is needed to prepare eight 3 ounce bottles of 10% tca solution?

Sever21 [200]

Answer:

295.7 mL of 24% trichloroacetic acid (tca) is needed .

Explanation:

Let the volume of 24% trichloroacetic acid solution be x

Volume of required 10% trichloroacetic acid solution =8 bottles of 3 ounces

= 24 ounces = 709.68 mL

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Amount of trichloroacetic acid in 24% solution of x volume of solution will be equal to amount of trichloroacetic acid in 10% solution of volume 709.68 mL.

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3 years ago