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hodyreva [135]
3 years ago
11

How long would it take for a car to travel 200km if it has an aventage speed of 55 km/ hr

Chemistry
2 answers:
krek1111 [17]3 years ago
7 0

Answer:

It would take 3.64 hours to travel.

Explanation:

200km with 55 per hour.

200 divided by 55 would equal 3.64.

I am dividing because to solve time would be distance/rate.

I hope this helps! :)

zimovet [89]3 years ago
5 0

Answer: 3.64 hours

Explanation:

Formula of Average speed : \text{Average speed}=\dfrac{\text{Distance}}{\text{Time}}

Given : Distance = 200km    ; Average speed = 55 km/ hr

To find : Time

Substitute values for distance and average speed in the above formula , we get

 55=\dfrac{200}{\text{Time}}\\\\\Rightarrow\text{Time}=\dfrac{200}{55}=3.63636363636\approx3.64\ hr

Hence, it would take 3.64 hours for a car to travel 200km .

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Answer:

Electronegativity generally increases from left to right across a period,

Explanation:

The true statement from the given choices is that electronegativity generally increases from left to right across a period.

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Across a period electronegativity increases from left to right and decreases down the group.

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Foods that allow microorganism to grow are called parasites true or false
Natasha_Volkova [10]
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3 years ago
What’s the difference between grazing and true predation
Mila [183]

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7 0
3 years ago
ΔG o for the reaction H2(g) + I2(g) ⇌ 2HI(g) is 2.60 kJ/mol at 25°C. Calculate ΔG o , and predict the direction in which the rea
kondaur [170]

Answer:

The reaction is not spontaneous in the forward direction, but in the reverse direction.

Explanation:

<u>Step 1: </u>Data given

H2(g) + I2(g) ⇌ 2HI(g)     ΔG° = 2.60 kJ/mol

Temperature = 25°C = 25+273 = 298 Kelvin

The initial pressures are:

pH2 = 3.10 atm

pI2 = 1.5 atm

pHI 1.75 atm

<u>Step 2</u>: Calculate ΔG

ΔG = ΔG° + RTln Q  

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with R = 8.3145 J/K*mol

with T = 298 Kelvin

Q = the reaction quotient → has the same expression as equilibrium constant → in this case Kp = [p(HI)]²/ [p(H2)] [p(I2)]

with pH2 = 3.10 atm

pI2 = 1.5 atm

pHI 1.75 atm

Q = (3.10²)/(1.5*1.75)

Q = 3.661

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ΔG = 2600 J/mol + 8.3145 J/K*mol * 298 K * ln(3.661)  

ΔG =5815.43 J/mol = 5.815 kJ/mol

To be spontaneous, ΔG should be <0.

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4 0
3 years ago
Ill give u brainliest help asap
Anna007 [38]

I think its A. it cant be C or D b/c we are measuring the distance between Earth and Saturn, not the speed.

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