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vichka [17]
3 years ago
12

Describe dmitri mendleev 's periodic table ​

Chemistry
1 answer:
ELEN [110]3 years ago
8 0

Answer:

He noted that repeating patterns of behavior could be seen in the way elements combined with each other. He included holes in his table and predicted their properties. He is recognized as the father of the modern periodic table.**Hope it was right. And that it helped!**

Explanation:

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If five moles of a gas at a pressure of 5.4 kpa have a volume of 120 liters, what is the temperature?
ra1l [238]
<h3>The temperature is 15.58 kelvin </h3>

<em><u>Solution:</u></em>

<em><u>Ideal gas equation is given as:</u></em>

PV = nRt

Where,

P = pressure

V = volume

n = amount of substance

R = ideal gas constant

T = temperature

From given,

V = 120 liters

n = 5 moles

R = 8.314\ \frac{Lkpa}{mol\  K}

P = 5.4 kPa

T = ?

Therefore,

5.4 \times 120 = 5 \times 8.314 \times T\\\\648 = 41.57 \times T\\\\T = 15.58\ kelvin

Thus the temperature is 15.58 kelvin

4 0
3 years ago
What are the three majors factors which affect weather?
Sergeeva-Olga [200]

Answer: The three main factors of weather are light (solar radiation), water (moisture) and temperature.

7 0
3 years ago
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A sample of seawater contains 1.3 g of calcium ions in 3,100 kg of solution. what is the calcium ion concentration of this solut
IrinaVladis [17]

A unit of ppm has an acronym of parts per million. The equivalent units of ppm is therefore mg/L and mg/kg. So the ppm is:

mass Ca+ = 1.3 g = 1300 mg

 

ppm = 1300 mg / 3100 kg

<span>ppm = 0.42 ppm</span>

6 0
3 years ago
Q2. The table gives the composition of three particles.
Kisachek [45]

Answer:

The proton and electrons are equal,

15protons and 15electrons

Explanation:

An atom is the smallest electrical neutral particle of an element so it means that every atom have same number of protons and electrons.

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rewona [7]

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1.25 hours or 75 minutes or 1 hour and 15 minutes

Explanation:

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2 years ago
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