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Genrish500 [490]

3 years ago

5

What is the name of the binary molecule H2O2? This compound is also known as hydrogen peroxide and is a properly disinfectant or

cuts and scrapes.

1 answer:

Masteriza [31]3 years ago

3 0

Answer:

hydrogen dioxide

Explanation:

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Calculate the percent composition for each element in each of the following compounds.

jek_recluse [69]

The answer is c because the calculations for the elements have to connect with the compounds

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3 years ago

Please help 10 points!!!

dalvyx [7]

<span>the average atomic mass of this element is 39.95 u</span>

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What type of relationship does temperature and pressure have?

blsea [12.9K]

Pressure is directly proportional to temperature.

<span>From the ideal gas law- </span>PV= nRT

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<span>This implies that Pressure is directly proportional to temperature, OR, as pressure increases, temperature will increase proportionally.</span>

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3 years ago

What is the density of a board dimensions are 5.54 cm x 10.6 cm X 199 cm and whose mass is 28.6kg

exis [7]

Answer:

$d=2.44\ g/cm^3$

Explanation:

Given that,

The dimensions of the board is 5.54 cm x 10.6 cm X 199 cm.

The mass of the board is 28.6 kg.

Since, 1 kg = 1000 grams

28.6 kg = 28.6 × 1000 g = 28600 grams

Density = mass/volume

So,

$d=\dfrac{28600\ g}{(5.54\times 10.6\times 199)\ cm^3}\\\\d=2.44\ g/cm^3$

So, the density of a board is $2.44\ g/cm^3$ .

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What percent by mass of aluminum is present in aluminum sulfate ?

xxMikexx [17]

The percent of aluminium of a aluminium sulfate, AI2(SO4)3 is 15.8%.

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3 years ago