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3 years ago

The Olympian swam 200 meters in 20 seconds. 1) velocity 2) acceleration 3) speed

Chemistry

2 answers:

KonstantinChe [14]3 years ago

5 0

The answer is 3) Speed.
Velocity describes speed and direction.
Accelerate is an increase of rate and speed

irakobra [83]3 years ago

3 0

Answer: velocity

Explanation:

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1pt The heaviest concentration of asteroids lies in a belt between

Olegator [25]

The answer is A, Mars and Jupiter.

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3 years ago

A student wants to make a 0.600 M aqueous solution of barium sulfate, BaSO4, and has a bottle containing 12.00 g of barium sulfa

love history [14]

<u>Answer: </u>The volume of the solution is 85.7 mL

<u>Explanation:</u>

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:

$\text{Molarity of solution}=\frac{\text{Given mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (mL)}}$ .....(1)

We are given:

Molarity of solution = 0.600 M

Given mass of $BaSO_4$ = 12.00 g

We know, molar mass of $BaSO_4=[(1\times 137.33)+(1\times 32.07)+(4\times 16)]=233.4g/mol$

Putting values in equation 1, we get:

$0.600=\frac{12.00\times 1000}{233.4\times \text{Volume of solution}}\\\\\text{Volume of solution}=\frac{12.00\times 1000}{233.4\times 0.600}=85.68mL=85.7mL$

The rule of significant number that is applied for the problems having multiplication and division:

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

Here, the least number of significant figures is 3 that is determined by the number, 0.600. Thus, the answer must have these many significant figures only.

Hence, the volume of the solution is 85.7 mL

5 0

3 years ago

Which statement best explains why sugar water can be easily separated?

VladimirAG [237]

Answer:

Sand has a strong non-polar covalent connection, that prevents water to break it down.

Explanation:

Sand being composed of quartz and small particulars of minerals can only be dissolved in hot acids, unlikd sugar which can easily be broken down by water, due to the large magnetic molecular propery of water and the ability to evolve sugar in an Intermolecular manner.

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3 years ago

Write the formulas of the compounds formed by Pb4+ with the following anions: NO3−, HCO3−, SO32−, PO43−. Use the given order of

vredina [299]

Pb(NO₃)₄
Pb(HCO₃)₄
Pb(SO₃)₂
Pb₃(PO₄)₄

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4 years ago

Read 2 more answers

Are these things good???

elena-s [515]

Depends, they are not too bad, but I wouldn't eat them anyway, even though they have supposedly 30% less fat they are still not good for you. Try eating a fruit or drinking a glass of water if you want to look out for your health!!

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3 years ago