3 years ago

With the given chemical compounds, what is the balanced chemical equation when lit with fire?

Chemistry

1 answer:

Alchen [17]3 years ago

8 0

Answer:

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The height of a column of mercury in a closed-end manometer is 13.2 cm. What is the pressure of the gas in torr

AlladinOne [14]

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$P_{gas}=131.96torr$

Explanation:

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In this case, the pressure must be computed as follows:

$P_{gas}=gh\rho _{Hg}$

Which is using the density of mercury (13.6 g/mL) and its height, thus, we obtain (using the proper units):

$P_{gas}=9.8\frac{m}{s^2}*(13.2cm *\frac{1m}{100cm} )*(13.6\frac{g}{cm^3}*\frac{1kg}{1000g}*\frac{1x10^6cm^3}{1m^3} )\\\\P_{gas}=17592.96Pa*\frac{760torr}{101325Pa} \\\\P_{gas}=131.96torr$

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3 years ago

How much of your blood is made of Plasma? A)10% <br> B)25% c)40% d)50%

Sveta_85 [38]

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3 years ago

Which must be the same when comparing 1 mol of oxygen gas, O2, with 1 mol of carbon monoxide gas, CO?

Ber [7]

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3 years ago

What is the percentage by mass of sulphur in Al2(SO4)3[A12SO4 =<br>342g/mol, S = 32]

valentinak56 [21]

Answer: The percentage by mass of sulphur in $Al_2(SO_4)_3$ is 9.36%

Explanation:

Mass percent of an element is the ratio of mass of that element by the total mass expressed in terms of percentage.

${\text {Mass percentage}}=\frac{\text {mass of sulphur}}{\text {Total mass}}\times 100\%$

Given: mass of sulphur = 32 g/mol

mass of $Al_2(SO_4)_3$ = 342 g/mol

Putting in the values we get:

${\text {Mass percentage}}=\frac{32g/mol}{342g/mol}\times 100\%=9.36\%$

The percentage by mass of sulphur in $Al_2(SO_4)_3$ is 9.36%

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3 years ago

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