2 years ago

An unknown substance can be identified by

Chemistry

1 answer:

kifflom [539]2 years ago

3 0

Are you asking if this is correct, or what the answer is?

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Identify all the physical properties of a base.

KiRa [710]

Answer:

Bases are ionic compounds that produce negative hydrogen ions (OH⁻) when dissolved in water.
An example of a base is Sodium Hydroxide (NaOH).
Bases have a bitter taste.
Bases feel slippery.
Bases conduct electricity when dissolved in water.
Bases change litmus paper from red to blue in colour.
They react with acids to form a salt and water, this process is called neutralisation.
The pH of bases ranges from 8-14.
Turns phenolphthalein pink.

Hope this helps!

7 0

2 years ago

What is the mass of 22.4 L of H2 at STP?

Vanyuwa [196]

A. 1.01 is the right answer

Since

The formula is Pv= nRT

P=1 atm

V= 22.4 L

N= x

r= 0.0821

t = 273 k (bc it’s standard temperature)

So (1)(22.4)=(x)(0.0821)(273)

X= 1.001

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2 years ago

Read 2 more answers

What is the sum of the coefficients of the balanced equation for:

Marianna [84]

Answer:

3 Pb(NO3)2 + Al2(SO4)3 = 2 Al(NO3)3 + 3 PbSO4

Explanation:

I think your equation is incorrect? This is balanced and the sum of coefficients is 9.

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2 years ago

5. Which of the following statements about the modern

Sauron [17]

The first one is true.

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2 years ago

List 3 things you learned or reviewed about solids, liquids and gases.

Dmitry [639]

Answer: A solid has a defined shape and volume. A common example is ice.

A liquid has a defined volume, but can change state. An example is liquid water.

A gas has neither a defined shape nor volume. Water vapor is an example of a gas

8 0

2 years ago