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2 years ago

Which of these is a mixture? A)potassium B)salad C)water H20 Dsugar C12H22O11

Chemistry

1 answer:

Lelu [443]2 years ago

8 0

A salad is a mixture but h2o is a mixture of molechules

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Explain how CO2 is absorbed into the ocean of H2O

Dmitrij [34]

The ocean absorbs CO2 from the atmosphere wherever air meets water. Wind causes waves, giving more opportunity for the water to absorb the carbon dioxide.

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2 years ago

9) After lab, all of Darrel’s friends looked at his data and laughed and laughed. They told him that he was 30.8% too low in the

zaharov [31]

If he was 30.8% too low, it means that he was at 69.2% of the boiling point needed. So 50o C is 69.2% of total.

In order to know what 100% is, you can divide the number by it's percentage and then multiply it by a hundred.

So: 50/30.8=1.623
1.623*100=162.3
So the correct boiling point of the liquid he was working with in the lab is 162.3 oC

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2 years ago

Read 2 more answers

1. Which sample contains a total of 9.0 * 10 ^ 23 atoms ? A) 0.50 mole of HCI B) 0.75 mole of H 2 O C) 1.5 moles of Cu D) 1.5 mo

Alchen [17]

c. 1.5 moles of Cu will contain a total of 9.0 * 10 ^ 23 atoms.

Explanation:

To convert moles into atoms, the molar amount and number of atom is multiplied by Avagadro's number.

Avagadro's number is 6.022× $10^{23}$

So applying the formula in the given sample:

A) 0.5×6.022× $10^{23}$

3.01× $10^{23}$ atoms.

B) 0.75 mole of H20

O.75×6.022× $10^{23}$

= 4.5166× $10^{23}$ atoms.

C) 1.5 moles of Cu

1.5×6.022× $10^{23}$

= 9.033× $10^{23}$

D). 1.5 moles of H2

1.5 × 2 × 6.022 × $10^{23}$

= 18.066 × $10^{23}$ atoms because H2 is 2 moles of hydrogen.

Atom is the smallest entity of matter having property of the element to which it is a part.

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2 years ago

What is the chemical composition of chromatin?

mel-nik [20]

Chromatin is composed of both DNA and other proteins in which the Double stranded molecule of DNA wraps around. The answer is B.

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2 years ago

Read 2 more answers

The equilibrium constant, Kp, equals 3.40 at 25°C for the isomerization reaction: cis-2-butene ⇌ trans-2-butene. If a flask init

Kipish [7]

Answer:

The system is not at equilibrium and the reaction will shift to the right until Kp = Q

Explanation:

For the reaction:

cis-2-butene ⇌ trans-2-butene

Kp is defined as:

$Kp = 3.40 = \frac{P_{trans-2-butene}}{P_{cis-2-butene}}$

<em>Where P is the pressure of each gas in equilibrium.</em>

If initially, a flask contains 5.00atm of each gas, Q of reaction will be:

Q = 5.00 atm / 5.00 atm = 1.

As Kp > Q, <em>the system is not at equilibrium and the reaction will shift to the right until Kp = Q</em>

5 0

2 years ago