All categories

3 years ago

I NEED HELP PLEASE HELP ME I'LL GIVE BRAINLIEST IT HAS TO BE RIGHT OR IMMA FAIL PLEASEEEEE

Chemistry

2 answers:

PolarNik [594]3 years ago

5 0

Answer:

I dont know your question

Explanation:

can you tell me more about your question then I could help!

algol [13]3 years ago

5 0

C is wavelength
3 waves/second is frequency
The line in the middle of the wave is amplitude

You might be interested in

When supply and demand for a product increase simultaneously, we can predict that both the market clearing price and the equilib

Whitepunk [10]

Answer: Explanation:

When supply and demand for a product increase simultaneously, we cannot predict the market clearing price, but know that the equilibrium quantity will increase.

NB: We cannot predict the market clearing price because no adequate information such as government policy is provided. such information would likely affect the market clearing price either positively or negatively.

P.S: This is a business question.

3 0

3 years ago

How many moles of aluminum oxide (Al2O3) are in a sample with a mass of 204. 0 g? 1. 000 2. 000 3. 0.

Aleks [24]

Answer:

1. 000.2

Explanation:

 aluminum oxide made of moles or atoms less then other elements need to decrease

6 0

3 years ago

Which symbol represents a salt? O CaCl2 O C6H12O6 O C2H2 O 02

leva [86]

A) CaCl2

Calcium chloride is an inorganic compound, a salt with the chemical formula CaCl2. It is a colorless crystalline solid at room temperature, highly soluble in water.

7 0

3 years ago

According to daltons atomic theory all Adams of the same element are identical today this theory is directly refuted by the disc

Vlad [161]

Answer:

Isotopes are variations of the same atom. They have the same number of protons but have a different number of neutrons. Isotopes of the same element are not identical to each other because they have varying mass numbers. Some isotopes are radioactive because their nucleus is unstable and some isotopes are not radioactive.

5 0

3 years ago

What is the molarity of a solution that contains 45 mEq Ca“ per liter?

Mashutka [201]

Answer:

0.0225 M

Explanation:

In one liter of this solution, there are 45 mEq of Ca⁺².

1 mEq of Ca⁺² is equal to 20 mg of Ca⁺. We know this by dividing its molar mass (40) by the charge of the ion (2).

Meaning that 45 mEq of Ca⁺² is equal to (45 * 20) 900 mg of Ca⁺².

Now we convert 900 mg of Ca⁺² into moles, using its molar mass:

900 mg / 1000 = 0.9 g

0.9 g Ca⁺² ÷ 40 g/mol = 0.0225 mol Ca⁺²

Finally we calculate the molarity of the solution:

Molarity = moles / liters

0.0225 mol / 1 L = 0.0225 M

7 0

3 years ago