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romanna [79]
4 years ago
15

what is the number of atoms of various elements present in the following compound. 2Na2SO4,2PbO,(NH4)2SO4,4KMO4,2NH4CI,3AI2(SO4)

3,Ca(HCO3)2,NH4NO2​
Chemistry
1 answer:
Ray Of Light [21]4 years ago
8 0

Answer:

Detail is given below.

Explanation:

2Na₂SO₄

There are two sodium, one sulfur and four oxygen atoms are present in Na₂SO₄.

In 2 mole of Na₂SO₄ = four sodium, two sulfur and 8 oxygen atoms are present.

2PbO

There are one oxygen and one lead atoms are present in PbO.

In 2 mole of PbO = 2 lead and 2 oxygen atoms

(NH₄)₂SO₄

There are two nitrogen, eight hydrogen, one sulfur and four oxygen atoms are present in (NH₄)₂SO₄.

4KMnO₄

There are one potassium, one manganese and four oxygen atoms are present in KMnO₄.

In 4 mole of KMnO₄ = four  potassium, four manganese and sixteen oxygen atoms

2NH₄Cl

There are one nitrogen, four hydrogen and one chlorine atoms are present in NH₄Cl.

In 2 mole of NH₄Cl = two nitrogen, eight hydrogen and two chlorine atoms

3Al₂(SO₄)₃

There are two aluminum, three sulfur and twelve oxygen atoms are present in Al₂(SO₄)₃.

In 3 mole of Al₂(SO₄)₃ = six aluminum, nine sulfur and thirty six oxygen atoms are present.

Ca(HCO₃)₂

There are one calcium, two hydrogen, two carbon and six oxygen atoms are present.

NH₄NO₂

There are two nitrogen, four hydrogen and two oxygen atoms are present in NH₄NO₂.

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If the relative rate of diffusion of ozone as compared to chlorine is 6:3 and further if the density of chlorine is 36 Find out
Alexandra [31]

Answer:

The density of ozone is 4.24.

Explanation:

The relation between the relative rate of diffusion and density is given by :

r\propto \dfrac{1}{\sqrt d}

The given ratio of the relative rate of diffusion of ozone as compared to chlorine is 6:3.

Let the density of ozone is d₂.

\dfrac{r_1}{r_2}=\sqrt{\dfrac{d_2}{d_1}} \\\\\dfrac{6}{3}=\sqrt{\dfrac{d_2}{36}} \\\\3=\dfrac{\sqrt{d_2}}{6}\\\\d_2=\sqrt{18} \\\\d_2=4.24

So, the density of ozone is 4.24.

6 0
3 years ago
A crow flies 100 meters east in 5 minutes. What is the crow’s velocity?​
torisob [31]

<em>Answer:</em>  20 m/min east

<em>Explanation:</em>  The speed is distance divided by time

distance between start-point and end-point = 100 meters

<em>time to cover the distan</em>ce  =  5 minutes

100 m ÷ 5 min = 20 m/min east

y<u>ou have to add east since velocity is the measure of speed and direction and your answer needs to include the direction</u>

3 0
3 years ago
Calculate the % Oxygen in NaHCO3
Alexxx [7]

Answer:

Molar mass of NaHCO3 = 84.00661 g/mo

Explanation:

This compound is also known as Baking Soda or Sodium Bicarbonate.

Convert grams NaHCO3 to moles  or  moles NaHCO3 to grams

Molecular weight calculation:

22.98977 + 1.00794 + 12.0107 + 15.9994*3

3 0
3 years ago
What is the energy change if 84.0 g of calcium oxide (CaO) reacts with excess water in the following reaction?
pochemuha
   The energy change  if 84.0 g   of CaO  react  with  excess  water is  98KJ of heat is released.

calculation
heat  =  number of moles  x  delta H

delta H = - 65.2  Kj/mol

first find the number of  moles  of  CaO reacted

moles = mass/molar mass
the molar mass  of CaO =  40 +  16=  56 g/mol
mass = 84 g
moles therefore = 84 g/56 g/mol =1.5 moles

Heat is therefore =  1.5 moles  x -65.2 = - 97.8 Kj = -98 Kj

  since  sign is  negative  the   energy  is released 

6 0
3 years ago
Why does nitric oxide (no) act as a paracrine signal that affects only neighboring cells?
VMariaS [17]

The correct answer is due to rapid conversion of nitrates into nirites in extracellular fluids.

Due to the fact that it is quickly transformed to nitrates and nitrites in the extracellular fluid, nitric oxide (NO) functions as a paracrine signal that only impacts nearby cells. Because it relaxes the smooth muscle cells in blood vessel walls, nitric oxide (NO) causes blood vessels to widen. Cell signaling is a type of cellular communication in which a cell produces a signal to cause changes in neighboring cells, changing the behavior of those cells. Paracrine signaling is one type of cell signaling. Responses to allergens, tissue repair, the development of scar tissue, and blood clotting are a few examples of paracrine signaling. The transmission of signals through synapses between nerve cells is known as paracrine signaling.

Learn more about paracrine signal here :-

brainly.com/question/12538424

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5 0
2 years ago
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