3 years ago

An element is an arrangement of atoms in a particular way; True or False?

Chemistry

1 answer:

sergij07 [2.7K]3 years ago

8 0

Answer:

i think it's true because An element is a substance that is made entirely from one type of atom

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Dr. Terror has developed a new alloy called Ultranomium. He is testing a bar that is 1.25 m1.25 m long and has a mass of 382 g.3

MrRissso [65]

Answer:0.8742j/g°C

Explanation: SOLUTION

GIVEN

length of bar=1.25m

mass 382g

temperature= 20°C to 288°C

Q=89300J

Specific Heat Capacity will be calculated using

Q=mC∆T

where

C = specific heat capacity

Q = heat

m = mass

Δ T = change in temperature

C=Q/ m∆T

=89300/382X(288-20.6)

=0.8742j/g°C

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3 years ago

Why are thiols more nucleophilic than alcohols?

Roman55 [17]

Answer:

Thiols contain stronger acids than alcohols

Explanation:

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2 years ago

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Why the moon is the barycenter of earth?

baherus [9]

Because it wanted to be

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3 years ago

Please help i have untill tomrow 2SO2(g) + O2(g) ----> 2SO3(g)

siniylev [52]

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3 years ago

A 100g sample of Carbon-14 has a half-life of 5 years. How much Carbon-14 is left after 10 years?

attashe74 [19]

Answer: The amount of carbon-14 left after 10 years is 25 g

Explanation:

Formula used :

$a=\frac{a_o}{2^n}$

where,

a = amount of reactant left after n-half lives = ?

$a_o$ = Initial amount of the reactant = 100 g

n = number of half lives = $\frac{\text {given time}}{\text {half life}}=\frac{10}{5}=2$

Putting values in above equation, we get:

$a=\frac{100g}{2^2}$

$a=\frac{100g}{4}=25g$

Therefore, the amount of carbon-14 left after 10 years is 25 g

6 0

3 years ago