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GenaCL600 [577]
3 years ago
9

Groups of elements that are shiny but not lustrous, have a semi-conductive property, and are brittle are classified as?

Chemistry
1 answer:
9966 [12]3 years ago
3 0
Answer:
A. Nonmetals
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What is the molarity of 2.00 L of a solution that contains 14.6 g NaCl?
White raven [17]

Answer: The molarity of the solution is 0.125 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n}{V_s}

where,

n = moles of solute

V_s = volume of solution in L

moles of NaCl = \frac{\text {given mass}}{\text {Molar mass}}=\frac{14.6g}{58.5g/mol}=0.250mol

Now put all the given values in the formula of molality, we get

Molarity=\frac{0.250mol}{2.00L}=0.125M

Therefore, the molarity of the solution is 0.125 M

8 0
3 years ago
a lab is performed to do the study of pH and heat on the function of the catalase enzyme found in carrot plants. what would be c
ad-work [718]
It would be the ph and heat
3 0
3 years ago
Which is the most likely reason why an aerosol can explodes when it is thrown into a fire?a. Heat causes the gas particles in th
LenKa [72]

I believe the correct answer is A

8 0
3 years ago
Read 2 more answers
Which statement below about contrasting Hb and Mb is FALSE?
olchik [2.2K]

Answer:

C. Hb binds O2 more tightly than Mb.

Explanation:

<u>Hb and Mb are both oxygen carrier protiens which contain the heme group. Hb has 4 heme units in 1 moleucle which work via coperative effect. On the other hand, Mb has only one heme unit. </u>

<u>From above theory, statement A and B are correct.</u>

<u>Although the heme group of the Mb is identical to those of Hb, Mb has a higher affinity for carrying oxygen than hemoglobin.</u>

<u>Hence, Statement C is wrong.</u>

Thats why the function of hemoglobin is to transport oxygen and that of myoglobin is to store oxygen.

<u>When a curve is plotted between oxygen accepted and the pressure of the oxygen, Hb shows sigmoidal, whereas Mb shows hyperbolic oxygen saturation curves.</u><u> The statement D is correct.</u>

<u>Bohr effect and various factors decribe the statement : Hb-oxygen binding is dependent on physiological changes in pH, whereas Mb-oxygen binding is not. </u><u>The  statement E is also correct.</u>

7 0
3 years ago
What are three reasons why a population might change?
Tom [10]
If people have children, If people die, and if there is a fire or volcanic eruption.

4 0
3 years ago
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