Which does not affect global wind belts

An element has an atomic number of 80. How many protons and electrons are in an atom of the element?

Nadya [2.5K]

80 protons,121 Neutrons, and 80 electrons the element is Mercury

6 0

3 years ago

What is a photon?

vlabodo [156]

Answer:

c

Explanation:

try it I'm 60%sur its this

8 0

2 years ago

For each trial, compute the mol of titrant; (molarity x L) and keep the number of significant figures to 4.

MrMuchimi

Answer:

Trial Number of moles

1 0.001249mol

2 0.001232mol

3 0.001187 mol

Explanation:

To calculate the number of moles of tritant you need its molarity.

Since the molarity is not reported, I will use 0.1000M (four significant figures), which is used in other similar problems.

Molarity is the concentration of the solution in number of moles of solute per liter of solution.

In this case the solute is NaOH.

The formula is:

$Molarity=\dfrac{\text{Number of moles of solute}}{\text{Volume of solution in liters}}$

Solve for the number of moles:

$\text{Number of moles}=Molarity\times Volume\text{ }in\text{ }liters$

Then, using the molarity of 0.1000M and the volumes for each trial you can calculate the number of moles of tritant.

Trial mL liters Number of moles

1 12.49 0.01249 0.01249liters × 0.1000M = 0.001249mol

2 12.32 0.01232 0.01232liters × 0.1000M = 0.001232mol

3 11.87 0.01187 0.01187liters × 0.1000M = 0.001187 mol

3 0

3 years ago

Read 2 more answers

In which of the following are the pH values arranged from the most basic to the most acidic?

MAVERICK [17]

Answer:

The correct answer is : 14, 10, 7, 4, 3, 1

Explanation:

The pH of the solution is a negative logarithm of the hydronium ion's concentrations present in a aqueous solution.The pH scale ranges from 0 to 14.

Mathematically written as:

$pH=-\log[H_3O^+]$

Higher the value of pH more alkaline will be the solution.
Lower the value of pH more acidic will be the solution.
The solution with pH value 7 is termed as neutral solution.

So, from the given options of pH arranged from most basic to most acidic will be the decreasing order from 14 to 1 :

14, 10, 7, 4, 3, 1

8 0

3 years ago

Which of the following statements are TRUE concerning this laboratory exercise - The systematic identification of an organic com

emmainna [20.7K]

Answer:

True;

False;

True;

True.

Explanation:

Organic compounds can be found pure, but generally, they are in mixtures, such as the petroleum, so it is possible to the compound received be impure;

Organic compounds can be found in the three states: solid, liquid or gas. The state will depend on the molecular forces in it and its molar mass. For example, gasoline is liquid in the ambient temperature, natural gas is a gas, and the glucose is solid;

The main characteristic of the organic compounds is the presence of C and H, the other elements can or can't be in the structure: O, N, halogens, and S;

Because of the carbon can form chains, there are several million possible known organic compounds;

The spectroscopic would give some results such as composition, molar mass, and diffraction, and with these results, it would be possible to identify some chemical properties and the tests needs more identification.

5 0

3 years ago