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3 years ago

I will give u 50 points if u help me

Chemistry

2 answers:

WITCHER [35]3 years ago

7 0

14) gas to liquid to solid
15)chlorine displaces bromine from potassium bromide
16) non-metals
6)vertical
7)similar properties
8)there are patterns
10)decrease
11)very reactive
12) hydrogen
18)lower density than air
19)better insulator
20)metalloids

Fofino [41]3 years ago

6 0

Answer:

a b a

Explanation:

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What do non metals do when they ionize

Tema [17]

will metal do is when they ionize they have relatively high energies.These atoms have large diameters. The outer electrons are relatively far from the nucleus. Metals tend to lose electrons and form positive ions.

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3 years ago

Within a period, the nuclear charge increases as you move from left to right across the

a_sh-v [17]

Answer:

The answer is Ionization energy.

Explanation:

Ionization Energy. The ionization energy tends to increase as one moves from left to right across a given period or up a group in the periodic table.

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3 years ago

How many molecules are present in the following quantity 0.250 mole of H2O

klio [65]

If 1mole ------------- is ---------------- 6.02*10²³
than 0.25mole ----- is ---------------- x

x = [0.25mole*6.02*10²³]/1mole = 1,505*10²³

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3 years ago

When solving an equation using Gay-Lussac's law, which of the following steps do not apply? A. List your knowns and unknowns. B.

suter [353]

Answer:

C. Plug the unknowns into the ideal gas law formula.

Explanation:

Gay-Lussac's law states that:

"For a constant mass of an ideal gas kept at constant volume, the pressure of the gas is directly proportional to its absolute temperature"

Mathematically, it can be written as:

$\frac{p_1}{T_1}=\frac{p_2}{T_2}$

where

p1 is the initial pressure

T1 is the initial temperature (in Kelvin)

p2 is the final pressure

T2 is the final temperature (in Kelvin)

Therefore, in order to solve for one of the 4 variables, the following steps must be adopted:

A. List your knowns and unknowns.

B. Convert temperature to kelvin.

D. Solve for the unknown.

While the following step is not needed:

C. Plug the unknowns into the ideal gas law formula.

Because we do not need to use the ideal gas law formula.

8 0

3 years ago

A compound with a molar mass of 102.133 g/mol contains an element with a subscript of 5 . the element is 58.80 g per 100.0 g com

VLD [36.1K]

Answer:

12.0108408

Explanation:

Denote the element with a letter like say X. Since it has a subscript of 5, then, X5.

Molecular mass=102.133g/mol.

% of X in compound =58.8/100

=0.588

Mass of X in the compound = 0.588*102.133 ( the % of X in compound * molar mass of compound)

= 60.054204

X5=60.054204

Then element X has a mass of 60.054204/5=12.0108408

6 0

4 years ago