CHEMISTRY HIGH SCHOOL

The temperature at which a liquid becomes a solid is the: a. boiling point
b. density
c. freezing point
d. solubility

Answers

Answer 1
Answer: The answer is "c" because solidification or freezing is the term used for the process in which a liquid becomes a solid. Freezing is an exothermic process that also is an example of a phase transition

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True or false: the Precision of a calculated answer is limited by the least precise measurement used in the calculation
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In which reaction are electrons transferred from one reactant to another reactant?(1) 2Ca(s) + O2(g) =>2CaO(s)(2) AgNO3(aq) + KCl(aq) =>AgCl(s) + KNO3(aq)(3) HCl(aq) + NaOH(aq) =>NaCl(aq) + H2O(l)(4) H3O+(aq) + OH-(aq) => 2H=O(l)
At which temperature and pressure would a sample of helium behave most like an ideal gas?

Homogeneous mixture definition

Answers

It is a mixture that is uniform in both composition and properties.

Answer:

It is a mixture that is uniform in both composition and properties.

Explanation:

The sense of touch is produced by______ within the skin. dermis,muscles,neurons,feelings

Answers

Neurons is the correct answer.

How does adding salt affect the freezing point of water?

Answers

One of the colligative properties of water is the freezing point depression. A colligative property is a change in the property of water due to some amount of solute. Adding salt will lower down the freezing point of water which means that more heat would be needed to bring the boil to freeze. 
When adding salt, the more you add the freezing point drops. The sodium and chlorine ions from the salt get in the way of the water molecules. This makes it harder for them to be rearranged into crystals. Salt prevents ice from staying solid because it raises the temperature .

Which of the following is an experiment? A) measuring the mean and standard deviation of measurements from a sample

B) generating outcomes based on some model of how they are really produced

C) comparing the outcomes of two different treatment protocols

D) recording the high and low temperature at a particular location every day

Answers

Answer: D) recording the high and low temperature at a particular location every day.

Explanation:

A experiment is a process which is conducted or performed to either support, refute or validate the hypothesis. It involves the detail repeatable procedure and the logical analysis of the outcomes of the results. It involves different variables which are compared to obtain the outcome of the experiment. For example the amount of water used everyday responsible for the plant height.

Among the options given, D) recording the high and low temperature at a particular location every day. is the correct option, temperature is a variable in the experiment. The change in the daily temperature of a location can be noted as observation of the experiment. This observation can be used to record the average temperature of the location.  
D! because when you record something you will probably analyze the results and those are two big KEY components of an Experiment! 

Predict the products in the following reaction: AgNO3(aq) + Na2CrO4(aq) →

Answers

You expect Sodium Nitrate and Silver Chromate, just go ahead and make sure your complete reaction is balanced

Help me please?
I need to pass this tomorrow ​

Answers

Here is what I have come up with, and I have used Mariam Webster for the definitions.
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