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4 years ago

Using the periodic table , choose the more reactive nonmetal. Br or As

2 answers:

7 0

bromine. argon is a noble gas with stable electronic configuration, thus it does not need to gain or lose electrons and will not react to form compounds.

Brut [27]4 years ago

5 0

actually it is As not Br. if it was between argon and bromine yes bromine is right. however thats not the case. the answer is As

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On analysis, an equilibrium mixture for the reaction 2h2s(g) 2h2(g) + s2(g) was found to contain 1.0 mol h2s, 4.0 mol h2, and 0.

mario62 [17]

Kc = 3.2

The chemical equation is

2H2S ⇌ 2H2 + S2

The equilibrium constant expression is

Kc ={[H2]^2[S2]}/[H2S]^2

1. Calculate the equilibrium concentrations of each component

[H2] = (4.0 mol)/(4.0 L) = 1.0 mol/L

[S2] = (0.80 mol)/(4.0 L) = 0.20 mol/L

[H2S] = (1.0 mol)/(4.0 L) = 0.25 mol/L

2. Calculate the value of the equilibrium constant

Kc = (1.0^2 x 0.20)/0.25^2 = 3.2

8 0

4 years ago

Read 2 more answers

An example of a greenhouse gas is

Sunny_sXe [5.5K]

Answer:

oxygen

Explanation:

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3 years ago

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A plane has a cruising speed of 100 miles per hour when there is no wind. At this speed, the plane flew 600 miles with the wind

alina1380 [7]

The solution for this problem is:
Let x = speed of wind

Speed of plane with the wind = x + 100

Speed of plane against the wind = 100 -x

We will be using the formula for distance which is (Rate)(Time), getting the formula for time would be distance/rate Time to travel 600 miles with the wind = Time to travel 400 miles against the wind 600/(x + 100) = 400/(100 - x)

400(x + 100) = 600(100 - x)

400x + 40000 = 60000 - 600x

1000x = 20000

x = 20000/1000

x = 20 mph

8 0

3 years ago

Question 15 (5 points)

Vladimir [108]

This problem is providing us with the maximum mass of Imitrex a patient can get daily as 0.2 g. Also, the mass of a tablet is given as 25 mg so the number of tablets they get in a day is required. After the calculations, the result turns out to be 10 tablets.

<h3>Dimensional analysis:</h3>

In chemistry, dimensional analysis is used to calculate specific outcomes given useful information to do so. Despite not having specific formulas for every problem, one can come up with a feasible proportional-factor-based setup, in order to obtain the required.

In this case, since the mass per tablet is 25 mg, one can divide the maximum dosage by this mass per tablet, both in grams, to obtain the required number of tablets for a daily dosage:

$25\frac{mg}{tablet}*\frac{1g}{1000mg}=0.025\frac{g}{tablet} \\\\\#tablets=\frac{0.25g}{0.025\frac{g}{tablet}} \\\\\#tablets=10 tablets$

Learn more about dimensional analysis: brainly.com/question/10874167

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2 years ago

A conclusion in science states whether or not a hypothesis is correct or not?

Fantom [35]

Answer:it do not states

Explanation:

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4 years ago