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2 years ago

What are the 4 physical changes you can observe?

2 answers:

8 0

1. ice melting

2. temperature going down at night 

3. water evaporating (like a towel drying out) or water drop on the sink 

4. dew forming on the mirror after a shower

iren2701 [21]2 years ago

6 0

1. ice melting

2. ripping paper

3. dew on mirror because of shower

4. breaking glass

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What mass of solid that has a molar mass of 46.0 g/mol should be added to 150.0 g of benzene to raise the boiling point of benze

enyata [817]

Answer : 17.12 g

Explanation: $\Delta T =k_b\times m$

$\Delta T$ = elevation in boiling point

$k_b$ = boiling point elevation constant

m= molality

$molality=\frac{mass of solute}{molecular mass of solute\times weight of the solvent in kg}$

given $\Delta T=6.28^{\circ}C$

Molar mass of solute = 46.0 $gmol^{-1}$

Weight of the solvent = 150.0 g = 0.15 kg

Putting in the values

$molality=\frac{x}{46gmol^{-1}\times0.15kg}$

$6.28 =2.53^{\circ}Ckgmol^{-1}\frac{x}{46gmol^{-1}\times 0.15kg}$

x = 17.12 g

3 0

3 years ago

Find the formula of the ionic compound made from aluminum (Al) and oxygen (O).

FrozenT [24]

The formula will be AI2O3

4 0

3 years ago

What are three ways we can measure sustainability while evaluating whether to buy a product?

jek_recluse [69]

Answer:

Environmental, Economic, and Societal Impacts

Explanation:

If the product is popular it'll be on social media...

If it helps you in some way it is useful, and probably needed

3 0

2 years ago

Read 2 more answers

A scientist measures out equal volumes and concentrations of hydrochloric acid and sodium hydroxide solutions. When mixed, these

olasank [31]

Answer:

Neutral solution is formed.

Explanation:

When the hydrochloric acid and sodium hydroxide which is a strong base are combined together, it produces sodium chloride which is a salt and water. This solution is known as Neutral solution because the solution do not have the characteristics or properties of either an acid or a base. If the concentration of one of the reactant is higher as compared to another reactant so the product has the characteristics of that reactant.

8 0

2 years ago

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What is the acknowledgment to ''Do all liquids evaporate at the same rate?'

natita [175]

'Do all liquids evaporate at the same rate
that would be false

4 0

2 years ago