3 years ago

In what order are chemical elements arranged on the periodic table?

Chemistry

1 answer:

Gala2k [10]3 years ago

3 0

Answer:

an increasng atomic number/ increasing proton count

Explanation:

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Which of the following is not correct Stated? '

Likurg_2 [28]

Answer:

Explanation:

rate law estimate mechanism of complex reactant It has no place in this table

7 0

2 years ago

A piston containing 0.120moles of methane gas, CH4, has a volume of 2.12liters. If methane is added until the volume is increase

earnstyle [38]

Answer:

2.83 g

Explanation:

At constant temperature and pressure, Using Avogadro's law

$\frac {V_1}{n_1}=\frac {V_2}{n_2}$

Given ,

V₁ = 2.12 L

V₂ = 3.12 L

n₁ = 0.120 moles

n₂ = ?

Using above equation as:

$\frac{2.12}{0.120}=\frac{3.12}{n_2}$

$2.12n_2=0.12\cdot \:3.12$

$2.12n_2=0.3744$

$n_2=\frac{0.3744}{2.12}$

$n_2=0.17660$

n₂ = 0.17660 moles

Molar mass of methane gas = 16.05 g/mol

So, Mass = Moles*Molar mass = 0.17660 * 16.05 g = 2.83 g

2.83 g are in the piston.

8 0

4 years ago

To neutralize 1.65g LiOH, how much .150 M HCl would be needed

Vinvika [58]

The molecular weight of LiOH would be 23.95 g/mol, so the amount of LiOH in mol would be: 1.64g/(23.95 g/mol)= 0.069 mol

The reaction of LiOH with HCl would be:
HCl + LiOH = H2O + LiCl
The coefficient of LiOH:HCL is 1:1 so you need the same amount of HCl to neutralize LiOH.

HCl= LiOH
volume* 0.15M= 0.069 mol
volume= 0.069 mol/ (0.15 mol/ 1000ml)
volume= 459.29 ml

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3 years ago

Which list accurately identifies the hierarchy of space from smallest to largest?

luda_lava [24]

The correct answer should be C

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3 years ago

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20% humidity is a low level which means there would be less of a chance of it

8090 [49]

Answer: True

Explanation:

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3 years ago