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3 years ago

In physical change the make up of matter is changedWho or false

Chemistry

2 answers:

Anni [7]3 years ago

7 0

Answer:

True, but the substance is not transformed into another, the same is usually reversible.

Harrizon [31]3 years ago

4 0

Answer:

False

That is a chemical change

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Pls help me here, thanks in advance

Marat540 [252]

Answer:

What's the problem???

4 0

2 years ago

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Atoms of one element are converted to atoms of another element through

lubasha [3.4K]

Atoms of one element are converted to atoms of another element through transmutation or nuclear transmutation.

6 0

2 years ago

"How many grams of CaCl2 would be dissolved in 1.0 L of a 0.10 M solution of CaCl2? "

lukranit [14]

Answer:

2365 g

Explanation:

6 0

2 years ago

A 0.4647-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.01962 mol of

Scilla [17]

Answer:

The essence including its given problem is outlined in the following segment on the context..

Explanation:

The given values are:

Moles of CO₂,

x = 0.01962

Moles of water,

$\frac{y}{2} =0.01961$

$y=2\times 0.01961$

$=0.03922$

Compound's mass,

= 0.4647 g

Let the compound's formula will be:

$C_{x}H_{y}O_{z}$

Combustion's general equation will be:

⇒ $C_{x}H_{y}O_{z}+x+(\frac{y}{4}-\frac{z}{2}) O_{2}=xCO_{2}+\frac{y}{2H_{2}O}$

On putting the estimated values, we get

⇒ $12\times x=1\times y+16\times z=0.4647$

⇒ $12\times 0.01962+1\times 0.03922+16\times z=0.4647$

⇒ $0.27466+16z=0.4647$

⇒ $z=0.01187$

Now,

x : y : z = $0.01962:0.03922:0.01187$

= $\frac{0.01962}{0.0118}:\frac{0.03922}{0.0188}:\frac{0.0188}{0.0188}$

= $1.6:3.3:1.0$

= $3:6:2$

So that the empirical formula seems to be "C₃H₆O₂".

8 0

2 years ago

What is a Newton?<br> explain please

Lina20 [59]

Answer:

it is the unit of Force

Explanation:

force is equal to Newton

5 0

2 years ago

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