3 years ago

Need help on number 14 please and thank u so much

Chemistry

1 answer:

mash [69]3 years ago

5 0

Answer:

gravity

Explanation:

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Now molecules: ____ molecules of H2 + ____ molecules of O2 → ____molecules of H2O

Valentin [98]

Answer:

4 H2 + 1 O2 = 2 H2O

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4 years ago

A sample of sugar (C12H22O11) contains 1.505 × 1023 molecules of sugar. How many moles of sugar are present in the sample?

saveliy_v [14]

Answer: Option (a) is correct.

Explanation:

Molecules of sugar given = $1.505 \times 10^{23}$

According to Avogadro's number it is known that 1 mole contains $6.023 \times 10^{23}$ .

Therefore, calculate the moles of sugar present in the sample as follows.

Number of moles = $\frac {1.505 \times 10^{23}}{6.023 \times 10^{23}}$

= 0.25 mol

Thus, the moles of sugar present in the sample is 0.25 mol.

6 0

3 years ago

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In a polyatomic ion, the -ate ending indicates one ____ oxygen than the -ite ending. A. more B. cannot be determined C. less D.

Aneli [31]

Correct answer is A: more :)

4 0

3 years ago

A sample of Neon is in a sealed container held under isothermic conditions. The initial pressure and volume are 2.7 atm and 4.5

Marina CMI [18]

Answer:

The final volume in mL is 7.14 mL or 7.1 mL.

Explanation:

1.Use Boyle's Law( $P_{1} V_{1}= P_{2} V_{2}$ ). Re-arrange to solve for $V_{2}$ for the final volume.

2. Plug in values. $V_{2} =\frac{(2.7 atm)(4.5 mL)}{(1.7 atm)} = 7.14 mL$

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2 years ago

______________ are caused by earth's internal heat sources.

quester [9]

Volcanic eruptions are caused by earth's internal heat sources.

All the other choices are atmospheric or external earth.

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3 years ago

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