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3 years ago

11

What is Chemistry and is it an applied or pure science subject?

1 answer:

elixir [45]3 years ago

4 0

Answer:

Explanation:

Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions. And The difference between Applied and Pure Sciences is that Applied Sciences focuses on the scientific knowledge of nature, it is more related to engineering and technology. Pure sciences is more related to theories and predictions to understand the world of nature, often performed in a laboratory.

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2. A chemical analysis of a sample provides the following elemental data:

Vadim26 [7]

Answer:

C3 H6 O2

Explanation:

first divide their mass by their respective molar mass, we get:

30.4 moles of C

61.2 moles of H

20.25 moles of O

now divide everyone by the smallest one of them then we get

C= 1.5

H= 3

O= 1

since our answer of C is not near to any whole number so we will multiply all of them by 2

so,

C3 H6 O2 is our answer

3 0

1 year ago

Calculate the work done when an ideal gas expands isothermally and reversibly in a piston and cylinder assembly for expansion of

pantera1 [17]

Answer:

$W=5743.1077\ J$

Explanation:

The expression for the work done is:

$W=RT \ln \left( \dfrac{P_1}{P_2} \right)$

Where,

W is the amount of work done by the gas

R is Gas constant having value = 8.314 J / K mol

T is the temperature

P₁ is the initial pressure

P₂ is the final pressure

Given that:

T = 300 K

P₁ = 10 bar

P₂ = 1 bar

Applying in the equation as:

$W=8.314\times 300 \ln \left( \dfrac{10}{1} \right)$

$W=300\times \:8.314\ln \left(10\right)$

$W=2.30258\times \:2494.2$

$W=5743.1077\ J$

5 0

2 years ago

Can someone please help

hram777 [196]

Answer: usuhduhduhdjhd

Explanation:

jaajaajaj

8 0

2 years ago

What is the potential energy of an 18 kg object with a height of 15 m?

kicyunya [14]

Explanation:

Potential Energy :

PE = m x g x h

PE= 18 x 10 x 15

PE= 2700Joule...

5 0

2 years ago

Read 2 more answers

How many neutrons does the isotope lithium have<br> A.) 3 <br> B.) 5 <br> C.) 8 <br> D.) 4

Fantom [35]

The answer is D they have 4 neutrons

6 0

1 year ago

Read 2 more answers