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3 years ago

Read the scenario.

Chemistry

2 answers:

8_murik_8 [283]3 years ago

6 0

The answer is C. 2 m/s

svet-max [94.6K]3 years ago

3 0

Answer: 2m/s

Explanation:

Initial position = 2m

Final position = 10m

Distance = 10-2 = 8m

Time = 4s

Velocity = distance(m) /time(s)

Velocity = 8/4 = 2m/s

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Write the balanced chemical equation between H2SO4 and KOH in aqueous solution. This is called a neutralization reaction and wil

emmainna [20.7K]

Answer:

0.166M

Explanation:

In a neutralization, the acid, H₂SO₄, reacts with a base, KOH, to produce a salt, K₂SO₄ and water. The reaction is:

H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O

To solve this problem, we need to determine moles of H2SO4 and moles of KOH that reacts to find the moles of sulfuric acid that remains after the reaction:

<em>Moles H2SO4:</em>

0.650L * (0.430mol /L) = 0.2795moles H2SO4

<em>Moles KOH:</em>

0.600L * (0.240mol / L) = 0.144 moles KOH

Moles of sulfuric acid that reacts with 0.144 moles of KOH are:

0.144 moles KOH * (1mol H2SO4 / 2 mol KOH) = 0.072 moles of H2SO4 react.

And remain:

0.2795moles H2SO4 - 0.072moles H2SO4 = 0.2075 moles of H2SO4 reamains.

In 0.650L + 0.600L = 1.25L:

Molar concentration of sulfuric acid:

0.2075 moles of H2SO4 / 1.25L =

7 0

3 years ago

A mixture of uneven distribution and easy separation is called_____. homogeneous heterogeneous a solution a pure substance

dem82 [27]

The correct answer is heterogeneous.

6 0

3 years ago

Read 2 more answers

How do you rewrite 4 5/7 as an improper fraction. in steps

noname [10]

Answer:

33/7

Multiply the denominator of the fraction by the whole number.

Add this result to the numerator of the fraction

answer becomes the numerator of the improper fraction.

Explanation:

6 0

3 years ago

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Is h2c2o4 an Arrhenius base or arrhenius acid

maksim [4K]

Answer:
Oxalic Acid is and Arrhenius Acid.

Explanation:
According to Arrhenius Theory of acid and base, "Acid is any substance which when dissolved in water produces H⁺ Ions".

Therefore, Oxalic Acid is a diprotic substance, which is capable of donating protons in water. This acidity of oxalic acid can be dedicated to the stability of conjugate base, this stability comes from resonance of the negative charges on Oxalate ion. Below reaction shows the dissociation of Oxalic Acid into Protons and Oxalate Ion.

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4 years ago

How can you obtain hydrogen from a mixture of ethene, hydrogen and ammonia gases?

irga5000 [103]

Answer:

We normally separate unreacted hydrogen from ammonia (product) in Haber process. The reaction mixture contains some ammonia, plus a lot of unreacted hydrogen and nitrogen. The mixture is cooled and compressed, causing the ammonia gas to condense into a liquid.

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3 years ago