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Elis [28]
3 years ago
11

Where more of hydrogen are contained in 90 g of water or in 80 g of methane

Chemistry
1 answer:
Lynna [10]3 years ago
7 0
Methane.

Water - H2O
Methane - CH4

Methane has 2 more hydrogens than water.
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A balloon is filled with 0.250 mole of air at 35°C. If the volume of the balloon is 6.23 liters, what is the absolute pressure o
ruslelena [56]

Answer:

102.807 kPa

Explanation:

There are some assumptions to be made in the answer. The air inside the balloon acts as an ideal gas at a given temperature conditions.

Using the combined ideal gas equation.

PV = nRT\\

P= absolute pressure of air inside the balloon.

V= volume of air inside the balloon (6.23 L= 6.23 * 10⁻³ m³)

n= moles of gas(air). (0.250 mol)

R= Universal gas constant ( 8.314 J / mol·K)

T= Temperature in Kelvin

T= 35 + 273.15 = 308.15 K

So, P = \frac{nRT}{V}

P = \frac{0.250 * 8.314 * 308.15}{6.23 * 10^{-3} }

P= 102.807 * 10³ Pa

P= 102.807 kPa

3 0
2 years ago
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A solution of baking soda and water has a pH of 8.40. What type of solution is this?
Gwar [14]
The solution is basic.
pH scale can be used to find out how acidic or basic a solution is .
When pH = 7 the solution is neutral,
pH < 7 solution is acidic
pH > 7 solution is neutral
Since the pH of solution is 8.40 then value is more than 7 therefore baking Soda and water is basic.
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What size volumetric flask would you use to create a 0.50 M<br> solution using 10.00 g of CaBr2
SIZIF [17.4K]

Answer:

Explanation:

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CaBr2 = 199.9 g/mol

10/199.9 = 0.05 moles of CaBr2

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