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2 years ago

5

How could you distinguish a compound from a mixture

2 answers:

ehidna [41]2 years ago

7 0

Answer:

<h3>Compound are substances which can be formed by chemically combining two or more elements. Mixtures are substances that are formed by physically mixing two or more substances.</h3>

Goshia [24]2 years ago

5 0

Answer:

A compound is the substances that are formed by combining two are more chemical elements. A mixture is a substance created from two or more matter that can be separate with the help of physical methods. Compound substances are always homogeneous in nature.

Composition: The ratio of the elements in compounds is always fixed. They contain o...

Definition: A compound is the substances that are formed by combining two are more ...

New substance: When two or more constituents are chemically combined

hope it will help you

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3.og idbj mass of mjemantg 2.oml

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3 years ago

A nuclear fission reaction has mass difference between the products and the reactants of 3.86 g. Calculate the amount of energy

iris [78.8K]

<u>Answer:</u> The amount of energy released by the reaction is $3.47\times 10^{14}J$

<u>Explanation:</u>

To calculate the energy released, we use Einstein equation, which is:

$E=\Delta mc^2$

where,

$\Delta m$ = difference between the masses of products and reactants = 3.86 g = 0.00386 kg (Conversion factor: 1 kg = 1000 g)

c = speed of light = $3\times 10^8m/s$

Putting values in above equation, we get:

$E=(3.86\times 10^{-3}kg)\times (3\times 10^8m/s)^2$

$E=3.47\times 10^{14}J$

Hence, the amount of energy released by the reaction is $3.47\times 10^{14}J$

3 0

3 years ago

Convert 7.50 mol of Li₂O to grams

Natali5045456 [20]

Answer:

223.5 g

Explanation:

The formula between the number of moles, mass and Mr can be used to convert moles to grams.

<em>Number of moles = mass ÷ Mr</em>

So, mass = number of moles × Mr

Mr of Li₂O = (6.9 × 2) + 16 = 29.8

∴ Mass = 7.5 × 29.8 = <u>223.5 g</u>

4 0

3 years ago

How many grams is cacl2are there in 2.5moles?

geniusboy [140]

Answer:

277,46Explanation:

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3 years ago

Read 2 more answers

Which compound has trigonal planar geometry?

Scorpion4ik [409]

Answer:

NH3 , SO3 , BF3

Explanation:

trigonal planar = AB3 ------------> Coordination number = 3

for example = NH3 , SO3 , BF3

all of them are trigonal planar

3 0

3 years ago