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4 years ago

Which statement best explains how atmospheric

Chemistry

1 answer:

riadik2000 [5.3K]4 years ago

4 0

Answer:(4) Dust particles provide surfaces on which

water vapor can condense

Explanation:

During condensation of clouds dust particles provides spaces where water vapor may condense.

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1) An atom of nitrogen has 7 protons. How many protons does an atom of silicon have? ______2) The element zinc (Zn) has an atomi

Lady_Fox [76]

Answer :

(1) The number of protons in silicon is, 14

(2) The number of neutrons in zinc is, 35

Explanation :

Atomic number is defined as the number of protons or number of electrons.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and number of neutrons.

Number of neutrons = Mass number - Number of protons

Prat 1 :

As we know that, silicon is a metalloid which belongs to group 14 and period 3.

The atomic number of silicon = 14

Atomic number = Number of protons = 14

Part 2 :

The given element is, zinc (Zn)

Atomic number of Zn = 30

Atomic number = Number of protons = 30

Mass number of Zn = 65

Number of neutrons = Mass number - Number of protons

Number of neutrons = 65 - 30

Number of neutrons = 35

8 0

4 years ago

What are complementary bases?

Radda [10]

Answer:

Two Sections that contain nitrogen of a nucleotide that bond together to connect strands of DNA or RNA.

Explanation:

3 0

3 years ago

Select all the correct answers.

Archy [21]

Answer:

The natural method of removal of CO2 is

Photosynthesis by plants

Absorption of CO2 from the atmosphere by ocean water

Melting of glacial ice

Explanation:

Respiration of living organism : In this process, Oxygen is consumed(removed) and Carbon dioxide(CO2 ) is formed.So it forms CO2 .

Photosynthesis by plants: Green plant containing. prepare their food in presence of sunlight by using CO2 , water ,Hence CO2 is removed from atmosphere.

Evaporation of ocean water : It increases the level of CO2 in atmosphere. The heating of oceans surface Degassed CO2 to atmosphere.

Absorption of CO2 from the atmosphere by ocean water : the plants under the oceans needs CO2 to carry out photosynthesis .Hence oceans absorbs CO2 from atmosphere .Here, CO2 is removed from atmosphere.

Melting of glacial ice : Glacial ice absorb carbon dioxide because it does not have organism respiration (organisms releasing CO2 ).They capture large amount of CO2 and called CO2 sinks.(Remove CO2)

4 0

3 years ago

Read 2 more answers

6. Compare and Contrast How are the properties of acids and bases similar? How are they different?

baherus [9]

$\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} - }$

Acids and bases both react with water and a lot of acids and bases are soluble in nature.
Both acids and bases are electrolytes which means that they’re good conductors of electricity.
Acids and bases both produce ions in water solution.
Acids release hydrogen ions (H+) whereas Bases release hydroxide ions (OH–).

4 0

3 years ago

At stp,a certain mass of gas occupies a volume of 790cm3. find the temperature at which the gas occupies 1000cm3 amd has a press

Luden [163]

The temperature : 332.75 K

<h3>Further explanation</h3>

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

volume of gas = 790 cm³ = 0.79 L

mol of gas at STP :

$\tt \dfrac{0.79}{22.4}=0.035$