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Olegator [25]
3 years ago
12

Explain what a scientific theory is, and what is necessary to make a theory strong and well supported?

Chemistry
1 answer:
Anna35 [415]3 years ago
7 0

in order for a scientific theory to become a scientific law it needs to be tested with generations of data to confirm that it is really true.

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A sample of co2 (solid) and a sample of co2 (gas) differ in their
vredina [299]
States of matter/temperature and density. 
4 0
3 years ago
Read 2 more answers
Which of the following is true?
Umnica [9.8K]

Answer:

The answer should be D

Explanation:

because turning 1 mole of propane to grams means its still one mole of propane just in a different unit.

8 0
2 years ago
A titration is performed to calculate the concentration of a solution of a monoprotic acid. The buret is filled with a standardi
miskamm [114]

Answer:

The concentration of the acid is 117.92 ± 0.03 mM.

Explanation:

In this problem, the concentration of NaOH and the volume used is given. The volume pipetted from the acid is also given. The concentration of the acid is given by:

CNaOH * VNaOH = Cacid * Vacid

158.32 * (18.76-0.14) = C acid * 25

C acid = 117.92 mM

The propagation of error for this problem, which is a multiplication is the concentration of the acid multiplied by the error divided by its respective value as shown in the equation below

error = 117.92 * \sqrt{\frac{0.05}{158.32}^{2} +\frac{0.03}{18.62}^{2} +\frac{0.03}{25}^{2} }

The answer is 0.03 mM of uncertainty.

8 0
3 years ago
You have 505 mL of a 0.160 M HCl solution and you want to dilute it to exactly 0.100 M. How much water should you add
liraira [26]

This problem is providing information about the volume and concentration of HCl as 505 mL and 0.160 M respectively, and it is asking for the water that have to be added to prepare a 0.100-M solution.

In such a way, we work over the assumption of constant moles in dilution processes, so that we are able to write:

M_1V_1=M_2V_2

Which relates de volume and concentration at the beginning and end of the experiment. This means we can solve for the resulting volume of the solution as a first calculation:

V_2=\frac{M_1V_1}{M_2}\\\\V_2=\frac{0.160M*505mL}{0.100M}=808mL

Hence, the following amount of water must be added:

V_w=808mL-505mL=303mL

Learn more:

  • brainly.com/question/5480904
  • brainly.com/question/435750
6 0
3 years ago
15 pts! Explain how the absorption of energy (heating) affects the speed of the particles in a substance.
Sophie [7]

Answer:

See explanation

Explanation:

Temperature has been severally defined as the measure of the average kinetic energy of the molecules of a body. Heat is a form of energy that exists due to temperature difference.

Given a body whose molecules has a speed = (3RT/M)^1/2; this implies that for a given mass of the substance, the velocity of its particles depends on the temperature of the substance.

However, absorption of heat increases the temperature of the body. Therefore, when heat is absorbed, the temperature increases and the speed of the particles of a substance increases according to the relation above.

8 0
3 years ago
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