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3 years ago

Determine the rate law and calculate the rate constant for the chemical reaction.

Chemistry

1 answer:

Soloha48 [4]3 years ago

6 0

Answer:

The rate law is [B]

Explanation:

In Trials 1 and 2, the concentration of B changes and A is the same so you can see how changes in B affect the rate. In this case, 0.300/0.150=2 and 7.11 x 10^-4 / 3.56 x 10^-4= 2. Since there 2^1=2, we can say that the reaction order of B is 1.

Similarly, if we look at trials 2 and 3, the concentration of B is constant, while A is changing. In this case, the rate has not changed at all with a change in concentration of A, so this means that A has 0 order.

Therefore, the rate law is just [B].

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a satellite with a mass of 100kg fires it’s engines to increase velocity, thereby increasing the size of its orbit around the ea

butalik [34]

The approximate change in gravitational force from Earth as a result of the change in radius of the satellite's orbit is -95.07N

<h3>What is the universal law of gravitation?</h3>

The universal law of gravitation states that the particle of matter in the universe attracts another particle with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

It is written thus;

F = G $M_1M_2$ ÷ $r^2$

Where

F = Gravitational force

G = Gravitational constant

$M_1$ and $M_2$ are the masses of the object

r = radius

How to calculate the gravitational force

Formula:

F = G $M_1M_2$ ÷ $r^2$

Given $M_1$ = 100kg

$M_2$ = 5.97 x $10^{24}$ kg

r = 7.5 x $10^6$ m

G = 6.67 x $10^{-11}$ N-m²/kg²

For the first orbit, substitute the values

F = 6.67 x $10^{-11}$ × 150 × 5.97 x $10^{24}$ ÷ (7.5 x $10^6$ ) $^2$

F = 5.95 × $10^{16}$ ÷ 56.25 × $10^{12}$ = 105.77 N

For the second orbit of radius 7.7 x 10^6 m

F = 6.67 x $10^{-11}$ × 100 × 5.97 x $10^{24}$ ÷ (7.7 x $10^6$ )2

F = 5.95 × $10^{16}$ ÷ 59.25 × $10^{12}$ = 200. 84 N

The approximate change = 105. 77 - 200. 84 = -95.07N

Hence, the approximate change in gravitational force from Earth as a result of the change in radius of the satellite's orbit is -95.07N

Learn more about gravitational force here:

brainly.com/question/19050897

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2 years ago

Why doesn’t the addition of an acid-base indicator affect the pH of the test solution?

elena-14-01-66 [18.8K]

The hydroxide ions keep decreasing and the hydrogen ions increase, pH decreases.

<h3>What is hydroxide?</h3>

Hydroxide is a diatomic anion with synthetic recipe OH⁻. It comprises of an oxygen and hydrogen particle kept intact by a solitary covalent bond, and conveys a negative electric charge. It is a significant yet generally minor constituent of water. It capabilities as a base, a ligand, a nucleophile, and an impetus. Hydroxide is a diatomic anion with chemical formula OH −. It consists of an oxygen and hydrogen atom held together by a single covalent bond, and carries a negative electric charge. It is an important but usually minor constituent of water. Hydroxide ions can act as a catalyst in different types of reactions. Hydroxide ions can function as base, ligand, nucleophile or a catalyst.