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horrorfan [7]
3 years ago
13

Which of the following pH numbers are basic? (Choose 2) 11 5 7 9

Chemistry
1 answer:
timama [110]3 years ago
8 0

Answer:

7 is the only basic number on a pH scale

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g Gaseous methane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 0.96 g of methane
galben [10]

Answer: 2.64 g of carbon dioxide that could be produced by the chemical reaction.

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} CH_4=\frac{0.96g}{16g/mol}=0.06moles

\text{Moles of} O_2=\frac{6.37}{32}=0.20moles

CH_4(g)+2O_2(g)\rightarrow CO_2(g)+2H_2O(g)

According to stoichiometry :

1 mole of CH_4 require = 2 moles of O_2

Thus 0.06 moles of CH_4 will require=\frac{2}{1}\times 0.06=0.12moles  of O_2

Thus CH_4 is the limiting reagent as it limits the formation of product and O_2 is the excess reagent.

As 1 moles of CH_4 give = 1 mole of CO_2

Thus 0.06 moles of CH_4 give =\frac{1}{1}\times 0.06=0.06moles  of CO_2

Mass of CO_2=moles\times {\text {Molar mass}}=0.06moles\times 44g/mol=2.64g

Thus 2.64 g of carbon dioxide that could be produced by the chemical reaction.

7 0
4 years ago
what are the lines called that show land elevations on a contour map? A. convergent lines. B. contour lines. C. elevation lines.
valkas [14]
The answer is B contour line
8 0
3 years ago
What is the bond that forms between two ions and why does this bond form?
lidiya [134]
Ionic bonds form bc of a difference in charges; opposites attract, negative to positive
5 0
3 years ago
How many liters of blood does the average living adult have
azamat

4.7-5 litres :)

I just googled it sorry if it’s wrong ahahaha

3 0
4 years ago
Students at Gonzaga University were attempting to make barium phosphate by precipitation when mixing solutions of barium chlorid
Solnce55 [7]

Answer:

Explanation:

3BaCl₂(aq)        +    2Na₃PO₄(aq)   =   Ba₃(PO₄)₂    +    6NaCl(aq)

3 x 208 g = 624 g    2 x 164 g = 328 g  

 328 g  of Na₃PO₄ reacts with 624 g of BaCl₂

.611 g  of Na₃PO₄ reacts with 624 x .611/328 g of BaCl₂

624 x .611/328 g = 1.16 g of BaCl₂

BaCl₂ available is .504 g which is less than required .

Hence BaCl₂ is limiting reagent .

7 0
3 years ago
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