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3 years ago

When metals react with other elements what happens to the valence electrons of the metal atoms?

Chemistry

1 answer:

andrew11 [14]3 years ago

5 0

Many metals donate its valence e⁻ when reacting with other elements

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At 650 mm hg a gas has a volume of 190 l what is its volume at standard pressure

vovangra [49]

Answer:Volume occupied by the gas at standard pressure is 162.5 L.

Explanation:

Pressure of the gas when it occupies volume of 190 L = 650 mmHg

Volume occupied by the gas when the gas is at standard pressure.

The value of standard pressure = 1 atm = 760 mmHg

$P_1=650 mmHg,V_1=190 L,P_2=760 mmHg,V_2=?$

According to Boyle's Law: $Pressure\propto \frac{1}{Volume}$ (at constant temperature)

$P_1\times V_1=P_2\times V_2$

$V_2=\frac{P_1\times V_1}{P_2}=\frac{650 mmHg\times 190 L}{760 mmHg}=162.5 L$

Volume occupied by the gas at standard pressure is 162.5 L.

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4 years ago

Which form of matter has no definite shape and no definite volume

Sonbull [250]

Answer:

Gas has no definite shape and volume

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3 years ago

Filtration can separate a mixture of fine sand and coarse gravel. The holes in the filter should be large enough to allow ______

Charra [1.4K]

The sand to pass through, but not the gravel. Hope this helps!

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3 years ago

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Why do we need to know these organic molecules? Are they important to living things?

laila [671]

Answer:

<h2>Organic molecules are important to living things because life is based on the properties of carbon. Carbon is an important element because it can </h2><h2>form four covalent bonds. ... The carbon skeletons contain the functional groups that are involved in biochemical reactions.</h2>

Explanation:

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3 years ago

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the more particles a substance has at a given temperature the more thermal energy it has true or false

Flauer [41]

Answer:

$\huge\boxed{\sf True}$

Explanation:

Temperature and thermal energy are in a direct proportion which means that if temperature of a substance increases, its thermal energy also increases and vice versa.

$\rule[225]{225}{2}$

Hope this helped!

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3 years ago