CHEMISTRY HIGH SCHOOL

Which reaction will most likely take place?Pt + FeCl3
Mn + CaO
Li + ZnCO3
Cu + 2KNO3

Answers

Answer 1
Answer: The correct answer of the given question above would be the third option: Li + ZnCO3. The reaction that will most likely take place is Li + ZnCO3. This is the reaction that will most likely take place since Lithium is very active. Hope this is the answer you are looking for. 
Answer 2
Answer:

I agree, the answer is Li+ZnCO3.

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Water has a higher boiling point than expected because A. there is so much water vapor in the atmosphere. B. water molecules are not very massive. C. hydrogen and oxygen form single covalent bonds. D. of the strong attractions between polar water molecules

Answers

The correct answer is C. Water has a higher boiling point than expected because hydrogen and oxygen form single covalent bonds. Molecules of water is bound together by strong attractions which needs high energy to break resulting to a higher boiling point of water than most substances.

Final answer:

Water has a higher boiling point than expected because D. of the strong attraction between polar water molecules.

Explanation:

The higher boiling point of water is due to the strong attraction between polar water molecules. Water molecules are polar because of the unequal distribution of electron density between the oxygen and hydrogen atoms, resulting in a slightly positive charge on the hydrogen atoms and a slightly negative charge on the oxygen atom.

Thus, these partial charges create attractive forces called hydrogen bonds between neighboring water molecules, making it difficult to separate the molecules and requiring more heat energy to overcome these attractive forces and reach the boiling point.

Learn more about boiling point of water here:

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25.367 + 15.08 sig fig

Answers

Answer: I think the answer is 40.45 please let me know if it's wrong

Why is salt put on icy roads and sidewalks in the winter?

Answers

so that ice would not melts and it helps to keep grip for walking or driving

All elements in a period have the same energy level due to which of the following reasons?a. The same atomic number
b. The same number of neutrons
c. The same number of electrons
d. The same number of elctron shells

Answers

All elements in a period have the same energy level due to The same number of electron shells. The answer is letter D. The rest of the choices do not answer the question above.

What is the volume of 70.0 g of ether if the density of isether 0.70 g/mL

Answers

D = m / V

0.70 g/mL = 70.0 g / V

V = 70.0 / 0.70

V = 100 mL

hope this helps!

What are the components needed in order for an experiment to be valid? Identify these components in the following experiment: A scientist is testing a new plant food to see if it causes plants to grow faster. The scientist tests two plants with the new plant food, and two plants he grows without plant food.

Answers

He is missing a (real) control. Growing two plants without plant food at all doesn't count; in order to see if the new food is better, he must also grow plants with the original food in order to compare it. 

He does have an independent variable. This is the type of plant food. It's independent because he has direct control over it.

He needs to give plants the same conditions besides food: same water (amount), same light exposure, same temperature, etc.

He needs to choose a quantitative way to measure how much the plants grew, like mass or length.
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