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4 years ago

Begin with a question. What is something you want to know about free fall?

Chemistry

1 answer:

Phoenix [80]4 years ago

5 0

Answer:

In free fall, an object moves under the influence of gravitational forceonly. The only acceleration is the acceleration of gravity g. No other force, including air resistance, is acting on such an object. Interestingly, an object in free fall doesn't necessarily need to be falling (that is, moving downwards).

Explanation:

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Calculate the average time it took the car to travel 0.25 What is the average time it took the car to travel 0.25

DedPeter [7]

Answer:

Explanation:

idk why all u guys like trump who do.. hes just a big pain in the a*s.

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3 years ago

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Mendeleev arranged the known chemical elements in a table according to increasing

vesna_86 [32]

Atomic mass. Which is the number of protons and neutrons combined.

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3 years ago

Balance the equations.<br> Zn+ HCl →<br> ZnCl2 +

motikmotik

Answer:

Zn + 2HCl → ZnCl2 + H2

Explanation:

Zn + HCl → ZnCl2 +

The complete equation is given below:

Zn+ HCl → ZnCl2 + H2

Now we can balance the equation by doing the following:

There are 2 atoms of Cl and 2 atoms of H on the left. This can be balanced by putting 2 in front of HCl as shown below:

Zn + 2HCl → ZnCl2 + H2

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4 years ago

How many moles of n are in 0.163 g of n2o?

zimovet [89]

First convert 0.163 grams of N2O to mol by dividing it with the molecular weight. The molecular weight of N2O is 44 grams/mol. The answer would be 3,79x10^-3. Then multiply it with 2 since there are 2 Nitrogen in one mole of N2O. Therefore, there are 7.41x10^-3 moles of Nitrogen.

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3 years ago

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Compounds A and B react to give a single product, C. Write the rate law for each of the following cases and determine the units

emmasim [6.3K]

Answer:

Explanation:

Rate laws are mathematical expressions which define the relationship that exists between the rate of a chemical reaction and the concentration of the reacting components. Rate laws take the following form:

$rate = k [A]^{x} [B]^{y} [C]^{z}$ ...

where k = rate constant

[A], [C] and [C] represent the molar concentrations of the reactants

k, x, y, and z are determined experimentally by observing how the rate of reaction changes with the concentrations of the reactants.

If x=1, the reaction is first order for [A]. Also, if y=2, the reaction is second order for [B] and so on...

The overall order of the reaction is the sum of the orders with respect to each reactant. Therefore, the overall order of the reaction is x+y+z.

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3 years ago