Convert 5.8 km to the unit mm. 0.0000058 mm 0.0058 mm 5,800 mm 5,800,000 mm

Chemistry

1 answer:

spin [16.1K]2 years ago

5 0

Its going to b 5,800,000 due to each Km being 1,000,000 Mm
Hope this helps :D

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A gray element that borders on the zigzag line of the periodic table, is ductile and malleable, but is not a very good conductor

frez [133]

The answer is non metal D

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2 years ago

Using the information in the table, calculate the number of moles in a \pu{7.89 kg}7.89 kg7, point, 89, space, k, g sample of as

Karolina [17]

We have to find the number of moles in a 7.89 kg sample of aspirin.

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We are given the molar mass of C, H and O:

H: 1.008 g/mol C: 12.01 g/mol O: 16.00 g/mol

Since one molecule of aspirin has 9 atoms of C, 8 atoms of H and 4 atoms of O, and using the molar masses given, we can calculate the molar mass of aspirin:

molar mass of aspirin = 9 * 12.01 g/mol + 8 * 1.008 g/mol + 4 * 16.00 g/mol

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Before we find the number of moles we can convert 7.89 kg to g. Since we know that there are 1000 g in 1 kg, we can convert it like this:

1000 g = 1 kg

mass of sample = 7.89 kg * 1000 g/1 kg

mass of sample = 7890 g

Finally, we can find the number of moles in the sample using the molar mass.

number of moles = 7890 g * 1 mol/180.154 g

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bixtya [17]

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2 years ago

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bekas [8.4K]

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