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White raven [17]
4 years ago
9

Vitamin K is involved in normal blood clotting. When 2.09 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point o

f the solution is lowered by 7.00 °C. Calculate the molar mass of vitamin K.
Chemistry
1 answer:
AURORKA [14]4 years ago
7 0
I don't think there is a question in there
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which of the following cannot be considered a single phase? a) a pure solid b) a pure liquid c) a homogeneous mixture d) a heter
Trava [24]
The question is asking to choose among the following choices is cannot be considered as a single phase and base on my further research and understanding about the sad topic, I would say that the answer would be <span>d) a heterogeneous mixture. I hope you are satisfied with my answer </span>
8 0
3 years ago
The graph shows the reaction pathway for the reaction Q + R N + M. Interpret the graph by describing what each of the letters (A
Vladimir [108]

Answer: The reaction is exothermic reaction as the energy of products is less than the energy of reactants.

Explanation: Exothermic reactions are defined as the reactions in which energy of the product is less than the energy of the reactants. The total energy is released in the form of heat and \Delta H for the reaction comes out to be negative.

Labeling of the parts in the diagram:

A represents the activation energy which is the energy required by reactants to cross the energy barrier to get converted to products.

E represents the potential energy of the reactants.

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D represents the potential energy of the products.

C represents the total enthalpy change of the reaction, which comes out to be negative for exothermic reactions.

\Delta H=E_P-E_R

7 0
3 years ago
Read 2 more answers
How many moles are 3.20 x102 formula units of calcium iodide?
DedPeter [7]

The number of moles in 3.20 x 10² formula units of calcium iodide is 0.053 moles.

<h3>How to calculate number of moles?</h3>

The number of moles in the formula units of a substance is calculated by dividing the formula unit by Avogadro's number.

According to this question, 3.20 x 10² formula units are in calcium iodide. The number of moles is as follows:

no of moles = 3.20 x 10²² ÷ 6.02 × 10²³

no of moles = 0.53 × 10-¹

no of moles = 0.053 moles

Therefore, the number of moles in 3.20 x 10² formula units of calcium iodide is 0.053 moles.

Learn more about number of moles at: brainly.com/question/12513822

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3 0
2 years ago
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PLEASE HELP ME THIS IS REALLY IMPORTANT!!!!!!!!!!!!!!!!!!!!!
Jet001 [13]

Answer:

That is called the synapse

Explanation:

Hope this helps

3 0
3 years ago
The element with the chemical symbol ______ is a nonmetal help me please
marysya [2.9K]

Answer:

O

Explanation:

O is in the red which says nonmetal

5 0
3 years ago
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