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Liula [17]
3 years ago
11

Coal is plentiful and inexpensive; therefore many countries use it despite its environmental impacts. True or False

Chemistry
2 answers:
Anuta_ua [19.1K]3 years ago
6 0
That statement is true
Despite its cheap price, The usage of coal as an energy source will release <span>sulfur dioxide, nitrogen oxides, to the air around our environment.
This substance will give negative effects such as acidic rain that could be corrosive to our body and polluted air that is bad for our respiratory system.</span>
Kay [80]3 years ago
3 0
True because it is something that will last for a while
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Is MgCO3 organic or inorganic
schepotkina [342]
Its inorganic as MgCO3 is contains no carbon more hydrogen which is a crutial component of all organic compounds 
4 0
3 years ago
Three bags containing different number of wooden cubes are dropped from the same height. Which of the following statements is tr
dezoksy [38]

Answer:

I don't have the number of cubes in each bag, but whichever bag had the most cubes would have the most kinetic energy as it falls

4 0
3 years ago
An atom of argon has a radius rar = 88 pm and an average speed in the gas phase at 25°C of 172 m/s.
Rudik [331]

Answer:

1.2* 10³ rNe.

Explanation:

Given speed of neon=350 m/s

Un-certainity in speed= (0.01/100) *350 =0.035 m/s

As per heisenberg uncertainity principle

Δx*mΔv ≥\frac{h}{4\pi }

4π

h

..................(1)

mass of neon atom =\frac{20*10^{-3} }{6.22*10^{-23} } =3.35*10^{-26} kg

6.22∗10

−23

20∗10

−3

=3.35∗10

−26

kg

substituating the values in eq. (1)

Δx =4.49*10^{-8}10

−8

m

In terms of rNe i.e 38 pm= 38*10^{-12}10

−12

Δx=\frac{4.49*10^{-8} }{38*10^{-12} }

38∗10

−12

4.49∗10

−8

=0.118*10^{4}10

4

* (rNe)

=1.18*10³ rN

= 1.2* 10³ rNe.

Explanation:

This is the answer

7 0
3 years ago
How many grams of S are in 475 g of SO2?
enot [183]

There are 237. 5 g of Sulfur,S in 475 g of SO2?

<h3 />

<h3>Calculation of grams of Sulfur</h3>

From the question, we can say that

  • The molar mass of sulfur = 32 g/mol
  • The molar mass of oxygen = 16 g/mol

Therefore,

The molar mass for SO2 = 32 + (16 × 2) g/mol  = 64 g/mol

Now,

If 1 mole of SO2 contains 1 mole of S

Then 64 g of SO2, will contain 32g of S;

Such that

475 g of SO2 will give { \frac{ 32g of S) ( 475 g of SO2)}{64 of SO2} }  = 237. 5 g of Sulfur.

Learn more about molar mass here :brainly.com/question/18291695

6 0
2 years ago
Which bond is least polar <br> N-O<br><br> S-O<br><br> H-O<br><br> C-O
Sphinxa [80]

Answer:

Her Eid per Ruth Jααte Hαin wo Humse,

αb bαtαo Hum Eid Mαnαye yα unko.

ہر عید پر روٹھ جاتے ہیں وہ ہم سے

اب بتاؤ ہم عید منائے یا ان کو

ik ishq ka gam aafat aur us pe ye dil aafat

ya gam na diya hota ya dil na diya hota

bas ek jhijhak hai haal-e-dil sunaane mein,

ki tera bhi jikr aaega mere is phasaane mein.

kya kahoon kis tarah se jita hoon

gam ko khaata hoon aansoo pita hoon

8 0
3 years ago
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