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dangina [55]
3 years ago
14

Convert 850 mm Hg to kPa. *

Chemistry
1 answer:
Feliz [49]3 years ago
4 0

Answer:

113.324 KPA

Explanation:

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What does " a man's home is his castle " mean
slega [8]
It means that someone's home is more than just a home to someone much more meaningful and precious like a castle
8 0
4 years ago
2. If the reaction of 5.75 moles of sodium with excess hydrofluoric acid is able to produce 2.49 mol H2, what is the percent yie
GuDViN [60]

Answer:

86.5%

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

2Na + 2HF –> 2NaF + H2

Next, we shall determine the theoretical yield of the hydrogen gas, H2. This is illustrated:

From the balanced equation above,

2 moles of Na reacted to produce 1 mole of H2.

Therefore, 5.75 moles of Na will react to produce = (5.75 x 1)/2 = 2.88 moles of H2.

Therefore, the theoretical yield of Hydrogen gas, H2 is 2.88 moles.

Finally, we shall determine the percentage yield of Hydrogen gas, H2. This can be obtained as follow:

Actual yield of H2 = 2.49 moes

Theoretical yield of H2 = 2.88 moles

Percentage yield of H2 =.?

Percentage yield = Actual yield /Theoretical yield x 100

Percentage yield = 2.49/2.88 x 100

Percentage yield = 86.5%

Therefore, the percentage yield of Hydrogen gas, H2 is 86.5%.

6 0
3 years ago
The belief that you lose fat mass in a specific body part by concentrating exercise in that area is known as:
Jobisdone [24]

Answer:

Targeted fat loss

Explanation:

4 0
3 years ago
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How many moles of water, H2O, contain 2.0×1022 molecules of water? (See the hints for assistance in interpreting scientific nota
hammer [34]
You have to use Avogadro's number which is 6.02x10^23.  The units of Avogadro's number is molecules/mole so you divide the number of molecules by Avogadro's number which will give you the number of moles.
(2.0x10^22 molecules)/(6.02x10^23 molecules/mole)=0.033 moles
5 0
4 years ago
What is Acid ?<br>please don't report , don't give link and give the correct answer .​
VladimirAG [237]

Answer:

Below in Bold

✧ \underline{ \underline{ \red{ \large{ \tt{E \: X \: P \: L \: A \: N \: A \: T \: I \: O \: N}}}} }:

♨ The word ' acid ' is derived from the Latin word ' acidus ' which means sour. An acid is defined as the substance which gives hydrogen ions or protons ( H+ ) when dissolved in water. For example :

  • Hydrochloric acid
  • Sulphuric acid
  • Nitric acid
  • Carbonic acid
  • Acetic acid

✎ \underline{ \underline{ \purple{ \large{ \tt{Extra \: Info}}}}} :

☃ Physical properties :

  • Acids have a sour taste. But some acids like steric acid, boric acid , salisylic acid do not have a sour taste. Laboratory acids are more corrosive , so they are dangerous to taste.
  • Acid turn blue colour of litmus paper into red and light yellow methyl orange into red. They make phenolphthalein colourless.

☂ Chemical properties :

  • Acids have a high dissolving power and dissolve many substances. Some metals like zinc and magnesium react with acids like dilute sulphuric acid and dilute hydrochloric acid to produce salt and hydrogen gas.
  • Acid react with base to give salt and water.
  • Acid gives H+ ions when dissolved in water.
  • Acid react with metallic carbonates to produce carbon dioxide.

☼ Hope I helped! ♡

Have a wonderful day / night ! ツ

☥ \underbrace{ \overbrace{ \mathfrak{Carry \:On \: Learning}}}

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

4 0
3 years ago
Read 2 more answers
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