3 years ago

How many classes for a sample of households groceries?

Chemistry

1 answer:

kirill [66]3 years ago

4 0

16318616165161616156165161961616

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viktelen [127]

Answer:

Explanation:

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3 years ago

For a given sample of ch3oh, the enthalpy change during the reaction is 82.3 kj . how many grams of methane gas are produced?

Leno4ka [110]

The equation is as follows;
2CH3OH(g) = 2CH4(g) + O2(g), ΔH= +252.8 kJ
From the equation; for the reaction to produce 2 moles of methane (32g) an energy of 252.8 kJ is released.
Therefore; for an energy of 82.3 kJ the number of moles that will be produced will be; = (2×82.3)/252.3
= 0.6524 moles
which is equivalent to 0.6524 × 16 = 10.438 g
There, the mass of CH4 produced will be 10.438 g

8 0

3 years ago

Tameca is planning a hiking trip. The trail she would like to follow is 7.5 miles long. She plans to start her hike at 10:00 am.

V125BC [204]

Answer:

1.5 miles per hour

Explanation:

7.5 miles in 5 hours

7.5/5=1.5 miles per hour

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3 years ago

A person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m. What is th

xz_007 [3.2K]

Answer:

The efficiency rating of the jack is 0.067.

Explanation:

We have, a person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m.

It is required to find the the efficiency rating of the jack. It is equal to the ratio of output work to the ratio of input work. So,

$\eta=\dfrac{1000\times 0.02}{200\times 1.5}\\\\\eta=0.067$

Thus, the efficiency rating of the jack is 0.067.

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3 years ago

A crystalline solid that is electrically neutral MOST likely has _________ bonds. A) ionic B) metallic C) covalent D) diatomic

k0ka [10]

A: Ionic Bond is how a crystal is bonded

5 0

3 years ago

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