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Andru [333]
3 years ago
11

Diameter 28cm,pie22/7find the circumference​

Chemistry
1 answer:
lutik1710 [3]3 years ago
5 0

Answer:

88

Explanation:

2πr

radius=14/2=7

2×22\7*7=88

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What is the effect of the following on the volume of 1 mol of an ideal gas?
krok68 [10]

The volume will be one third of the original volume of an ideal gas.

Boyle’s law depicts the relationship between the pressure ,volume and the temperature of a gas. Boyle’s law states that the pressure of a gas is inversely proportional to its volume at a constant temperature.

P ∝ 1 / V

Or, PV = k

When the temperature is kept constant.

According to the question, when the pressure is increased from 2 atm to 6 atm , the pressure is increases thrice ,hence the volume will decrease three times simultaneously of the original volume of 1 mol of an ideal gas.

The equation of the Boyle’s law is; P1V1 = P2V2

Learn more about Boyle’s law here:

brainly.com/question/1437490

#SPJ4

4 0
2 years ago
How can I balance this equation? ____ KClO3→ ____ KCl+ ____ O2
Lana71 [14]
<span>the K and Cl are 1:1 .. the problem is in the O .. you have 3 
(left side) and 2 (right side) .. you multiply the O2 on the right by 3 .. 

KClO3 ---> KCl + 3 O2 

and now you have 6 O on the right and 3 on the left .. so you multiply the KClO3 by 2 .. 

2 KClO3 ---> KCl + 3 O2 

now you have 6 O on both sides .. now balance the K and Cl by multiplying KCl on the right by 2 .. 

2 KClO3 ---> 2 KCl + 3 O2</span><span>
</span>
8 0
3 years ago
At -32.7 °C, a gas takes up 0.750 mL. What temperature, in °C, would be needed to reduce the volume to half that amount?
Gnom [1K]

Answer:

-152.92°C

Explanation:

Initial volume = 0.750 mL

Initial temperature = -32.7 °C (-32.7 + 273.15 K = 240.45 k)

Final temperature = ?

Final volume = 0.750 mL / 2= 0.375 mL

Solution:

The given problem will be solve through the Charles Law.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

T₂ = T₁V₂ / V₁

T₂ =  240.45 k  × 0.375 mL / 0.750 mL

T₂ = 90.17 mL.K / 0.750 mL

T₂ = 120.23  K

Temperature in celsius:

120.23  K - 273.15 = -152.92°C

6 0
3 years ago
Which is the strongest reducing agent in the periodic table?
ycow [4]
"Caesium" is the strongest reducing agent in Periodic table.

Hope this helps!
8 0
3 years ago
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What is a harmful role of bacteria?
zzz [600]

Answer:

sickness.

Explanation:

some bacterium cause sickness, kike a stomach bug.

6 0
4 years ago
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