2 years ago

Read: https://kids.britannica.com/kids/article/DNA/390730 (Links to an external site.)

Chemistry

1 answer:

kompoz [17]2 years ago

4 0

Answer:

im not doing your whole homework. but ill give you one cent ;>, whats ur paypal

Explanation:

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The following reaction occurs in aqueous solution: NH4 + (aq) + NO2 - â†’ N2 (g) + 2H2O (l) The data below is obtained at 25Â°C.

GREYUIT [131]

Answer: The order with respect to $NH_4^+$ is 1.

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

$NH_4^++NO_2^-\rightarrow N_2+2H_2O$

$Rate=k[NH_4^+]^x[NO_2^-]^y$

k= rate constant

x = order with respect to $NH_4^+$

y = order with respect to A $NO_2^-$

n = x+y = Total order

From trial 1: $3.2\times 10^{-3}=k[0.0100]^x[0.200]^y$ (1)

From trial 2: $6.4\times 10^{-3}=k[0.0200]^x[0.200]^y$ (2)

Dividing 2 by 1 : $\frac{6.4\times 10^{-3}}{3.2\times 10^{-3}}=\frac{k[0.0100]^x[0.2000]^y}{k[0.0200]^x[0.200]^y}$

$2=2^x,2^1=2^x$ therefore x= 1

Thus order with respect to $NH_4^+$ is 1.

8 0

2 years ago

Joanne wants to study the chemical properties of a substance. Which of the following is an example of a chemical property?

Eddi Din [679]

Answer:

observe if it reacts with acids

Explanation:

Because whether it reacts is determined by its chemical properties

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2 years ago

Its a more then one answer can u help me

Lady bird [3.3K]

The answers would be
1.b
2.c
3.a

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3 years ago

A calcium atom has 20 protons, 20 electrons, and 20 neutrons. When calcium forms a positive two ion it's new composition is

miss Akunina [59]

Answer:

Explanation:

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2 years ago

What is (3.2x10^14) x (7.3x10^10)

Molodets [167]

So first, you would take 10 and raise it up to the 14th power. Then take 10, and raise it up to 10th power. After doing all the work, your answer should be 2.336E29.

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3 years ago