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butalik [34]
3 years ago
6

The amplitude of a wave is

Chemistry
2 answers:
ki77a [65]3 years ago
8 0

Answer:

None of these

Explanation:

Amplitude is the distance from rest to crest.

Option A isn't the right answer

Option A is wavelength

Ghella [55]3 years ago
4 0

Answer:

the answer is A.

Explanation:

I hope this helps have a fantastic day!

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Calculate: A. Mercury has a specific Heat Capacity of 0.14 J/goC. How much heat is needed to raise the thermometer temperature 1
kari74 [83]

Answer:

\boxed {\boxed {\sf 56 \ Joules}}

Explanation:

We are given the mass, specific heat, and temperature, so we must use this formula for heat energy.

q=mc \Delta T

The mass is 5 grams, the specific heat capacity is 0.14 Joules per gram degree Celsius. Let's find the change in temperature.

  • ΔT= final temperature - initial temperature
  • ΔT= 95°C - 15°C = 80°C

We know the variables and can substitute them into the formula.

m= 5 \ g \\c= 0.14 \ J/ g \ \textdegree C \\\Delta T= 80 \ \textdegree C

q= (5 \ g )( 0.14 \ J/ g \ \textdegree C ) ( 80 \ \textdegree C)

Multiply the first numbers. The grams will cancel.

q= 0.7 \ J/ \textdegree C(80 \ \textdegree C )

Multiply again. This time the degrees Celsius cancel.

q= 56 \ J

56 Joules of heat are needed.

4 0
3 years ago
Name the element found in a water molecule.
skelet666 [1.2K]

Answer:

Oxygen atom

Explanation:

A water molecule consists of three atoms; an oxygen atom and two hydrogen atoms, which are bond together like little magnets. The atoms consist of matter that has a nucleus in the centre.

5 0
3 years ago
Read 2 more answers
ILL GIVE A BRAINLY PLS HELP
Oksana_A [137]

Atoms are the unit of the molecule of the compound. The 3.01 x 10²⁴  atoms of oxygen are present in 5 moles of water and 3 moles of carbon dioxide in the sample.

<h3>What are atoms?</h3>

Atoms are the smallest fundamental unit of the compounds that can be given by Avogadro's number.

For calculating the oxygen atoms in 5 mole water:

If 1 mole = 6.02 × 10²³

Then, 5 moles = 5 ×  6.02 × 10²³

Hence, 3.01 x 10²⁴ atoms of oxygen are present in 5 moles of water.

Moles of carbon dioxide in the sample is calculated as:

If 1 mole of carbon dioxide = 6.02 × 10²³ molecules

Then moles in 1.8 x 10²⁴ molecules will be,

(1.8 x 10²⁴ molecules) ÷ (6.02 × 10²³ molecules)  = 3 moles

Hence, 3 moles of carbon dioxide is present in the sample.

Learn more about Avogadro's number here:

brainly.com/question/5098076

#SPJ1

3 0
2 years ago
A solution is made by mixing 50 ml of 2.0m k2hpo4 and 25 ml of 2.0m kh2po4. the solution is diluted to a final volume of 200 ml.
Volgvan

50 mL of 2.0 M of K_2HPO_4 and 25 mL of 2.0 M of KH_2PO_4 were mixed to make a solution

Final volume of the solution after dilution = 200 mL    (given)

Final concentration of K_2HPO_4, [K_2HPO_4] = \frac{50 mL\times 2 M}{200 mL} = 0.5 M

Final concentration of KH_2PO_4, [KH_2PO_4] = \frac{25 mL\times 2 M}{200 mL} = 0.25 M

Using Hasselbach- Henderson equation:

pH = pK_a+ log \frac{[salt]}{[acid]}

pka of KH_2PO_4 = 6.85

Substituting the values:

pH = 6.85+ log \frac{0.5}{0.25}

pH = 6.85+ log 2

pH = 6.85+ 0.3 = 7.15

Hence,  the pH of the final solution is 7.15.

8 0
3 years ago
Read 2 more answers
A product that is a chemically bonded combination of reactants will form in which type of reaction? Check all that apply.
stira [4]
Both synthesis and polymerization processes create chemically bonded combination of reactants. Synthesis is a reaction which uses various reactants to form one product, for example formation of water from hydrogen and oxygen. Polymerization illustrates the same process, wherein it uses simple monomer molecules in a reaction to create longer polymer chains, for example formation of proteins through polymerization of amino acids.
6 0
3 years ago
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