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Arte-miy333 [17]

4 years ago

15

Which statement describes the periodic law?

2 answers:

Monica [59]4 years ago

7 0

elements is the same group have similar chemical properties

mr_godi [17]4 years ago

3 0

Answer is: elements in the same group have similar chemical properties.
Periodic law<span> is the arrangement of the </span>elements<span> in order of increasing atomic number.
</span>For example all alkaline metals (I group of periodic table, Na, K, Cs...) loose one electron in chemical reaction and react vigorously with water.

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help asap show work | a gas with a volume of 13L at a pressure of 197 kPA is allowed to expand to a volume of 23L. what is the p

Lera25 [3.4K]

Answer:

<h2>111 kPa</h2>

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we're finding the new pressure

$P_2 = \frac{P_1V_1}{V_2} \\$

We have

$P_2 = \frac{13 \times 197000}{23} = \frac{2561000}{23} \\ = 111347.826...$

We have the final answer as

<h3>111 kPa </h3>

Hope this helps you

5 0

3 years ago

What is an example

Paha777 [63]

Answer:

NaF sodium flouride

Explanation:

7 0

3 years ago

Sugar is stirred into water tp form a solution what names to we give to the sugar and water

Nina [5.8K]

Your answer would be, Sugar is the solute, and water is the solvent. a solution is the mixture of two, or more substances.

Hope that helps!!!

7 0

4 years ago

Determina el pH de una solución si la concentración de H es 3.5 x 10 molar, e indicar si es acido o bas

erastovalidia [21]

Answer:

Explanation:

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3 years ago

How many liters of methane gas (CH4) need to be combusted to produce 8.5 liters of water vapor, if all measurements are taken at

Ber [7]

1 mole of CH4 results to 2 moles of H2O.

If 8.5 liters are to be produced, then (1CH4/2H20)*(8.5L h2o) = 4.25L CH4

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4 years ago