3 years ago

A package within package can be best defined as which of the following

Chemistry

1 answer:

Citrus2011 [14]3 years ago

7 0

Answer:

double-protected

Explanation:

If a package is inside a package, the item inside the second package is double-protected, because the outer package will keep it safe.

Hope this helps!

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All living things are made of organic compounds which contain the element

valkas [14]

B)hydrogen ...................

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3 years ago

Read 2 more answers

How many molecules of CH4 are in 48.2 g of this compound? A) 2.00 x 1023 B) 5.00 x 10-24 C)1.81 x 1024 D) 4.00 E) 4.64 x 1026 10

Tasya [4]

<u>Answer:</u> The correct answer is Option C.

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of methane = 48.2 g

Molar mass of methane = 16 g/mol

Putting values in above equation, we get:

$\text{Moles of }CH_4=\frac{48.2g}{16g/mol}=3.0125mol$

According to mole concept:

1 mole of compound contains $6.022\times 10^{23}$ number of molecules.

So, 3.0125 moles of methane will contain = $3.0125\times 6.022\times 10^{23}18.141\times 10^{23}=1.81\times 10^{24}$ number of molecules.

Hence, the correct answer is Option C.

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3 years ago

Calculate the molecular masses of C4 H10 atoms molecules or ionic formulae

Basile [38]

C4H10 is an alkane (propane to be precise)

The relative formula mass of a molecule of propane is

(12x4) + (1x10) = 58

because a carbon atom has an atomic weight of 12 and a hydrogen atom has an atomic weight of 1.

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2 years ago

Alan runs at a speed of 250 m/min. how far does he run for in 5 minutes

Tasya [4]

Answer:

Alan runs 1250 m/min in five minutes

Explanation:

250 x 5

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4 years ago

How many Significant Figures does 105.60 have? *

nevsk [136]

Answer:

5 significant figures

Explanation:

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