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allochka39001 [22]
3 years ago
14

How is gas different from a liquid

Chemistry
2 answers:
vlada-n [284]3 years ago
6 0
The gas is different from a liquid because the gas can escape a liquid doesn't
satela [25.4K]3 years ago
4 0
The atoms and molecules in gases<span> are much more spread out than in solids or</span>liquids<span>. They vibrate and move freely at high speeds. A </span>gas<span> will fill any container, but if the container is not sealed, the </span>gas<span> will escape. </span>Gas<span> can be compressed much more easily than a </span>liquid<span> or solid</span>
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CaC2 + 2H2O ⟶ C2H2 + Ca(OH)2<br><br> How many moles of water are needed to produce 56.8g C2H2?
pshichka [43]

Amount of moles of water is 4.36 mol

Explanation: M(C2H2) = 2·12.01 + 2·1.008 = 26.036 g/mol

Amount of substance is n= m/M= 56.8 g / 26.036 g/mol= 2.18159 mol

Water is needed 2·2.18 mol = 4.36 mol

6 0
3 years ago
Lab: Limiting Reactant and Percent Yield
creativ13 [48]

Answer : If a substance is the limiting reactant, then it limits the formation of products because in the reaction it is present in limited amount.

Explanation :

While observing a chemical reaction, we can tell about whether a reactant is limiting or excess.

Step 1 : first write the chemical reaction and then balanced the chemical equation.

C_2H_4+H_2\rightarrow C_2H_6

Step 2 : convert the given masses into the moles if mass of C_2H_4 is 10.5 g and molar mass of C_2H_4 is 28 g/mole and the mass of hydrogen is 0.40 g and molar mass of hydrogen is 2 g/mole.

\text{moles of }C_{2}H_{4}=\frac{10.5g}{28g/mole}=0.375moles

\text{moles of }H_{2}=\frac{0.40g}{2g/mole}=0.20moles

Step 3 : Now we have to determine the limiting reagent and excess reagent.

\text{ moles of }C_{2}H_{4}\text{ in excess}=0.375-0.20=0.175\text{moles}

Now we conclude that C_{2}H_{4} is the limiting reagent and hydrogen is an excess reagent.

Hypothesis :

Limiting reagent : It is the reagent in the chemical reaction that is totally consumed when the chemical reaction is complete.  Limiting reagent limits the formation of products.

7 0
2 years ago
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What is the ph of a 0.20 M solution of NH4Cl? [Kb(NH3) = 1.8 x 10^-5]
Pavlova-9 [17]

"NH4+ <----> NH3 + H+  

The constant of this equilibrium is: K = Kw / Kb = 1 x 10^-14 / 1.8 x 10^-5 =5.56 x 10^-10  

5.56 x 10^-10 = x^2 / 0.20-x  

x = [H+] =1.1 x 10^-5 M  

pH = 5.0"

8 0
3 years ago
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Which of the following statements is true? A. The process of meiosis forms daughter cells which are genetically identical to the
Marat540 [252]

Answer:

Mitosis results in the formation of two haploid gametes which can then combine to form a diploid daughter cell

Explanation:

Meiosis creates different cells

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3 years ago
How long does it take the Earth to move from Point A to Point C?
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Answer:

the answer should be six months

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