What are properties of valence?

1 answer:

7 0

Chemical reactions. The number of electrons in an atom's outermost valence shell governs its bonding behavior. Therefore, elements whose atoms can have the same number of valance electrons are grouped together in the periodic table of the elements.

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If you start with ten grams of reactants how many grams of product should you get

love history [14]

The sum of the masses of the reactants is equal to the sum of the masses of the products.

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3 years ago

On a cool, rainy day, the barometric pressure is 698 mmHg. Calculate the barometric pressure in centimeters of water (cmH2O). De

lesantik [10]

Answer:

Barometric pressure is 942.3 cm of column of water.

Explanation:

We can measure barometric pressure by measuring the height h of a column of fluid (this column of fluid exerts the same pressure as the column of air of which we are measuring pressure) using the following formula:

$P = \rho*g*h\\$

Where ρ is the density of the fluid used and g the acceleration of gravity.

Knowing that both the column of mercury (to match units, we know that 698 mmHg are the same as 69.8 cmHg) and the column of water are representing the same pressure, we can match expressions and find h for the column of water:

$\rho_{Hg} *g*h_{Hg} =\rho_{Water} *g*h_{Water}\\ \\h_{Water}=\frac{rho_{Hg} *g*h_{Hg}}{\rho_{Water} *g} = \frac{13.5g/mL *9.8m/s^{2} *69.8cm}{1g/mL *9.8m/s^{2}}=942.3 cmH_{2}O$

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3 years ago

Why do intermolecular forces exist between water molecules?

fenix001 [56]

Answer:

I dont really know but they are really small

Explanation:

hope this helps

3 0

3 years ago

Read 2 more answers

What is the lowest possible energy level that an electron can occupy?

aev [14]

Answer: the amount of energy needed to move an electron from one zone to another is a fixed, finite amount. At the lowest energy level, the one closest to the atomic center, there is a single 1s orbital that can hold 2 electrons

Explanation:

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3 years ago

how many joules of heat are absorbed to raise the temperature of 435 grams of water at 1 atm from 25c to its boiling point 100c

Rasek [7]

It is 4.18 joules pr gram

Q=435* 4.18* (100-25)
Q=136.4kj

4 0

3 years ago