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trasher [3.6K]
3 years ago
5

#NEEDHELPASAP #MARINESCIENCE

Chemistry
1 answer:
Keith_Richards [23]3 years ago
3 0
I believe it is B because surfers could tell when, they seat on the board and feel the water
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If you observe something and want to determine why it is happening, what steps should you
Sloan [31]

Answer:

Make an observation.

Ask a question.

Form a hypothesis, or testable explanation.

Make a prediction based on the hypothesis.

Test the prediction.

Iterate: use the results to make new hypotheses or predictions.

4 0
3 years ago
Explain with equations and calculations, when necessary, whether an aqueous solution of each of these salts is acidic, basic, or
Julli [10]

NaHS is an acidic salt.

NaHS is obtained by replacement of one acidic hydrogen of `H2S` by Na (on reaction with NaOH).

<h3>What do we know about NaHS?</h3>

The chemical compound with the formula NaSH is sodium hydrosulfide. This substance is created when hydrogen sulfide is partially neutralized with sodium hydroxide. In the industrial setting, sodium sulfide and NaSH are frequently employed for the same things. Solid NaSH has no color.

Solution of sodium hydrosulfide is a colorless to light-yellow liquid. corrosive to flesh and metals. It is employed in the production of colors and paper pulp.

To learn more about acidic salt:

brainly.com/question/7178280

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7 0
1 year ago
Which of the following apply to gases. Select all that apply.
melamori03 [73]

Explanation:

In gases the molecules are held together by weak Vander waal forces. Due to this they have more kinetic energy and they tend to diffuse at a faster rate because of more number of collisions between the molecules.

That is why, its molecules readily spread into the atmosphere as compared to the molecules of solids and liquids. Also, when molecules of a gas collide with the walls of a container then they tend to come back at their initial position for a fraction of second or more.

Hence, gas collisions are elastic in nature.

According to Graham's law, rate of diffusion of a gas is inversely proportional to the square root of molar mass of the gas. Hence, more is the molecular weight of gas less likely it is able to diffuse into the surroundings.

       \text{Rate of diffusion} \propto \sqrt{\frac{1}{M}}

Thus, we can conclude that following apply to gases.

  • Gas collisions are elastic.
  • Gases mix faster than solids or liquids.
  • Gases with larger molecular weights diffuse slower than gases with lower molecular weights.
4 0
3 years ago
Which of the following is represented by the number of significant figures in a quantity? A) estimation B) precision C) accuracy
enyata [817]

Answer: the answer is B estimation

Explanation:

i just took a test

4 0
3 years ago
Give the chemical symbol for the element with the ground‑state electron configuration [ Ar ] 4 s 2 3 d 1 . symbol: Determine the
Rus_ich [418]

Answer:

Sc (Scandium) has the given electronic configuration.

Explanation:

The given electronic configuration is [Ar]4s^{2}3d^{1}.

The last electron enters the d-subshell and hence is a d-block element known as Scandium with chemical symbol Sc.

For 4s subshell

n=4,l=0 and m ranges from -l to +l so m=0.

For 3d subshell

n=3,l=2 and m ranges from -l to +l so m can take values -2,-1,0,+1,+2

Note:

l values for subshells:

s : 0

p : 1

d : 2

f : 3 and so on.

5 0
2 years ago
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