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3 years ago

10

True or false:

1 answer:

Leno4ka [110]3 years ago

6 0

The statement “The mechanical advantage of a compound machine is equal to the one simple machine that has the greatest mechanical advantage” is TRUE. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

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The empirical formula of an organic compound is C2H4O. The molecular mass of the compound is 176g/mol.

Brrunno [24]

Answer:

The molecular formula of the compound is $C_{8}H_{16}O_{4}$ . The molecular formula is obtained by the following expression shown below

$\textrm{Molecular formula }= n\times \textrm{Empirical formula}$

Explanation:

Given molecular mass of the compound is 176 g/mol

Given empirical formula is $C_{2}H_{4}O$

Atomic mass of carbon, hydrogen and oxygen are 12 u , 1 u and 16 u respectively.

Empirical formula mass of the compound = $\left ( 2\times12+4+16 \right ) \textrm{ u} = 44 \textrm{ g/mol}$

$n = \displaystyle \frac{\textrm{Molecular formula mass}}{\textrm{Empirical formula mass}} \\n = \displaystyle \frac{176}{44} = 4$

$\textrm{Molecular formula }= n\times \textrm{Empirical formula}$

Molecular formula = 4 $\times$ $C_{2}H_{4}O$

Molecular formula is $C_{8}H_{16}O_{4}$

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3 years ago

Glycerol boils at a high temperature than water. What does this indicate about the attractive forces of glycerol?

forsale [732]

Glycerol attractive forces are great than water. The harder to break, the more energy is needed.

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3 years ago

1s22s²2p63s23p64s²3d104p5<br> Which element is this?

bearhunter [10]

Answer: bromine

Explanation:

There are a total of 2+2+6+2+6+2+10+5=35 electrons, meaning there are 35 protons. The element with atomic number 35 is <u>bromine</u>

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2 years ago

Which of these is a base ?<br><br> a.vinegar <br> b.NaOH <br> c.HNO3<br> d.HCI

sergey [27]

Answer:

B. NaOH

Explanation:

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3 years ago

Read 2 more answers

A cylinder containing 14.68 L of helium gas at a pressure of 169.3 atm is to be used to fill toy balloons to a pressure of 1.071

Naily [24]

Answer: The maximum number of balloons that can be inflated is 955

Explanation: Please see the attachments below

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3 years ago