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ozzi
3 years ago
15

a ping pong ball is shot straight north from a popgun at 4.0 m/ s. the wind is blowing to the west at 3.0 m/s. which of the foll

owing diagrams best illustrates the actual path of the ping pong ball?​
Chemistry
2 answers:
ahrayia [7]3 years ago
7 0

Answer:

Actual velocity of the ping-pong ball= 5 m/s

Explanation:

velocity of ping pong ball because of the shot gun= 4 m/s North

velocity added to the ping-pong ball due to the wind=3 m/s

These velocities are perpendicular to each other. so we use Pythagoras theorem to find the resultant velocity of the ping- pong ball

so the actual velocity of the ping-pong ball =V= √4²+3²

V= √25

V= 5 m/s

Explanation:

WANNA TALK ON PADLET BOY

nordsb [41]3 years ago
5 0

Actual velocity of the ping-pong ball= 5 m/s

I hope this helped! If so, please mark brainliest!

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What is the density of chlorine gas (MM = 71.0glmol) at 1.50 atm and 25.0C
IrinaVladis [17]

Answer: D=4.35g/L

Explanation:

The formula for density is D=\frac{M}{V}. M is mass in grams and V is volume in liters.

Since we are give pressure and temperature, we can use the ideal gas law to find moles/volume. FInding moles/volume would give us the base for density. All we would have to do is convert moles to grams.

Ideal Gas Law: PV=nRT

\frac{n}{V} =\frac{P}{RT}

\frac{n}{V}=\frac{1.50 atm}{(0.08206Latm/Kmol)(25+274.15K)}

\frac{n}{V} =\frac{0.061309mol}{L}

Now that we have moles, we can use molar mass of chlorine gas to find grams.

0.061309mol*\frac{71.0g}{mol} =4.3529g

With our grams, we can find our density.

D=\frac{4.3529g}{L}

We need correct significant figures so our density is:

D=\frac{4.35g}{L}

5 0
3 years ago
Decide which element probably forms a compound with chlorine that has a chemical formula most and least similar to the chemical
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Answer:

Most similar - Lithium

Least similar - Phosphorus

Explanation:

Rubidium is an element in group 1A of the periodic table. It is a metal and forms an ionic compound with chlorine. The formula of the compound is RbCl.

If we look at the options, Lithium is also a group 1A element and forms an ionic compound with chlorine having the formula LiCl which is very much similar to RbCl chemically.

Phosphorus is a nonmetal. Its compounds with chlorine, PCl3 and PCl5 are covalent and does not resemble RbCl in any way.

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Calculate the ph of a solution with a [H3O+]=5.6x10-9M
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Answer:

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Explanation:

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pH is calculated as,

                                 pH  =  - log [H⁺]   ---- (1)

Where;

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Also, for bases pH i calculated using following formula,

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Therefore, Putting value of H⁺ in equation 1,

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The solution provided is basic in nature.

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