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3 years ago

Please help me with these! Mark brainliest

Chemistry

1 answer:

bearhunter [10]3 years ago

6 0

Answer:

1. Alkalinity

2. True

3. Red

Explanation:

1. 8-14, which are the bases, are alkaline

2. Salt lowers the melting/freezing point of water

3. Blue --> Red is Acid

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What is in with those numbers? H2O?

vlabodo [156]

Answer:

hydrogen atom and oxygen atom

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2 years ago

How many moles of SO2 are required to produce 0.45 mole CS2?

Kaylis [27]

Answer: The moles of carbon needed will be, 13.8 moles

Explanation: Moles of = 5.52 mole

Now we have to calculate to moles of carbon.

The given balanced chemical reaction is,

From the balanced chemical reaction, we conclude that

As, 2 mole of react to give 5 moles of carbon

So, 5.52 mole of react to give moles of carbon

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4 0

3 years ago

Read 2 more answers

Anyone can help me please

Vlad1618 [11]

x=3

Use the pythagorean theorem:

a^2 + b^2 = c^2

4^2 + x^2 = 5^2

16 + x^2 = 25

x^2 = 25-16

x^2 = 9

√x^2 = √9

x = 3

5 0

3 years ago

How can a mixture of salt water be separated into salt and water

kkurt [141]

Answer: by boiling the water to have it evaporate in to water vaper

Explanation:

4 0

3 years ago

What is the concentration in molarity of S2O32- (aq) in a solution prepared by mixing 150 mLmL of 0.149 MM Na2S2O3 (aq) with eno

Artist 52 [7]

Answer:

0.0890 M

Explanation:

Since the concentration of KCl is irrelevant in this case, the concentration of Na2S2O3 can be determined using a simple dilution equation:

C1V1 = C2V2, where C1 = 0.149 M, V1 = 150 mL, V2 = 250 mL

C2 = 0.149 x 150/250

= 0.089 M

To determine the concentration of S2O32- (aq), consider the equation:

$Na_2S_2O_3 => 2Na^+_{(aq)} + S_2O^2^-_3_{(aq)}$

The concentration of Na2S2O3 and S2O32- (aq) is 1:1

Hence, the concentration in molarity of S2O32- (aq) is 0.089 M.

To 3 significant figures = 0.0890 M

7 0

3 years ago