CHEMISTRY HIGH SCHOOL

What is the Mr of Pb(C2H3O2)4

Answers

Answer 1
Answer:

Answer:  

Element Symbol Atomic Mass # of Atoms Mass Percent

Lead Pb 207.2 1 46.732%

Explanation:

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Solute definition chemistry

Which is true about the dissolving process in water? Nonpolar solutes dissolve easily in water. Solute molecules surround water molecules. Molecules or ions of a solute spread throughout the water molecules. Water molecules are repelled by solute ions at the surface of the solute.

Answers

The simple principle for solute dissolution in a particular solvent is "like dissolves like". In the case of water, a solute will dissolve if it is polar. This is because water is a polar solvent. A polar substance is one which has particles that have a net charge on them. This net charge produces forces of attraction. When a polar solute is added to water, the water molecules are attracted to the solute particles and they attach to them. After attaching to the water molecules, the solute particles are dispersed throughout the water. Therefore, the answer is molecules or ions of a solute spread throughout the water molecules.

Answer:

C. Molecules or ions of a solute spread throughout the water molecules.

Explanation:

C. Molecules or ions of a solute spread throughout the water molecules.

While camping up at Haloooo Mountain (5,500 feet above sea level), it generally takes Sandy about the same amount of time to boil water for her soup as it takes to make a sandwich. This week, Sandy is camping at a trail that is only about 200 feet above sea level. Sandy is very hungry and wants something to eat immediately. Should she make the soup or sandwich? Which would be ready more quickly and why?

Answers

She should make soup. When you are way above sea level, the atmospheric pressure decreases. Boiling starts when the vapor pressure of the liquid is the same with the atmospheric pressure. This would mean that water boils at a much lower temperature than the usual 100deg C. So it would take longer for the components in the soup to cook compared to when it is cooked on the foot of the mountain. 

The CredSSP authentication protocol requires live migrations to be performed directly on a Hyper-V host. True or false?

Answers

true.

hope this helps!! :)

Use exponential notation to express the number 385,500 ha. one significant figure.
b. two significant figures.
c. three significant figures.
d. five significant figures.

Answers

To express the number 385,500 hours using exponential notation with a specific number of significant figures, you can use the following steps:

a. One significant figure:
- Expressing 385,500 as 3.9 × 10^5 hours (rounded to one significant figure).

b. Two significant figures:
- Expressing 385,500 as 3.9 × 10^5 hours (rounded to two significant figures).

c. Three significant figures:
- Expressing 385,500 as 3.86 × 10^5 hours (rounded to three significant figures).

d. Five significant figures:
- Expressing 385,500 as 3.8550 × 10^5 hours (rounded to five significant figures).

Keep in mind that the exponential notation represents the same value but with the specified number of significant figures.

A die is shaped like which solid?

Answers

According to the forces of attraction , a die is shaped is like cube which shows that  it is a solid.

What are forces of attraction?

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

Learn more about forces of attraction,here:

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Dice are commonly shaped as cubes so that all sides can be equal thus not skewing the results towards a certain  outcome.

During a test trial, the control and test group are both given a pill. To account for the effect patients may think the drug being tested is having just because they believe they're being treated, the control group is given a "sugar pill," which is called what?A) Placebo
B) Drug
C) Medicine
D) Screening Tool 
Ohp xD nvm, the answer is A !

Answers

During the test trial, the sugar pill given to the control group is called a  placebo. Therefore, the correct option is A. Placebo

What is a placebo ?

A placebo is any drug or a treatment with no active substances, for example a sugar pill.

During clinical trials, usually one group takes the actual drug while the other group takes the placebo without being aware of it.

Placebo is an inactive treatment given to a group of people that is made to look like the real drug, but in reality it simply makes the patient believe they're being treated with the drug and that the drug will help them relieve from the symptoms.

By comparing the results from the two groups, this method helps in analyzing the accurate effects of the drug on the patients and helps in proving that it was the drug that actually treated the symptom and that the treatment did not occur by chance or just a mere belief of the patient thinking they will get better because they're being treated.

This approach helps reduce bias and ensures that the trial's results are more accurate and reliable.    

So, the sugar pill given to the control group is called a  placebo. Therefore, the correct option is A. Placebo

To learn more about placebo, click on

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The answer is a placebo.
Other Questions
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