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4 years ago

For the reaction 2ch4(g)⇌c2h2(g)+3h2(g) k = 0.135 at 1615 ∘c . what is kp for the reaction at this temperature?

1 answer:

7 0

We can get Kp value from this formula:
Kp = Kc(RT)^Δn
when Kc= 0.135
and R = 0.08206 L.atm/mol.K
and Δn = total number of moles of products - total number of moles of reactants
= 1+3-2 = 2
T= tempreature in kelvin = 1615 °C+273 =1888 K
so by substitution:

∴ Kp = 0.135 * (0.08206 * 1888)^2
= 3240.4

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How are monosaccharides different from disaccharides?

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Saccharides are sugars or carbohydrates

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The prefix di means 2
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Disaccharides are 2 basic carbohydrate molecule

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3 years ago

a patient needs 2.0 grams of medication every 6 hours. The medication is given in tablets. Each tablet contains 250mg of medicat

IgorC [24]

Answer:

$\large \boxed{32}$

Explanation:

$\text{Dosage rate} = \dfrac{\text{2.0 g}}{\text{6 h}}$

We must convert this measurement to units of "tablets per day".

1. Convert grams to milligrams

$\text{Mass} = \text{2.0 g} \times \dfrac{\text{1000 mg}}{\text{1 g}} = \text{2000 mg}$

2. Convert milligrams to tablets

$\text{No. of tablets} = \text{2000 mg} \times \dfrac{\text{1 tablet}}{\text{250 mg}} = \text{8.0 tablets}$

3. Convert hours to days

$\text{Time} = \text{6 h} \times \dfrac{\text{1 da}}{\text{24 h}} = \text{ 0.25 da}$

4. Calculate the tablets per day

$\dfrac{\text{2.0 g}}{\text{6 h}} = \dfrac{\text{8.0 tablets}}{\text{0.25 da}} = \textbf{32 tablets per day}\\\\\text{The patient must take $\large \boxed{\textbf{32 tablets per day}}$}$

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3 years ago

Write a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form carbon monoxide gas and water vapor

Korolek [52]

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4 years ago

How many grams of water can be formed when 80 grams of sodium hydroxide (NaOH) reacts with an excess of sulfuric acid, H2SO4, in

podryga [215]

Answer:

36g of H2O.

Explanation:

We'll begin by writing the balanced equation for the reaction:

2NaOH + H2SO4 —> Na2SO4 + 2H2O

Next, we shall determine the mass of NaOH that reacted and the mass of H2O produced from the balanced equation. This is illustrated below:

Molar mass of NaOH = 23 + 16 + 1 = 40g/mol

Mass of NaOH from the balanced equation = 2 x 40 = 80g

Molar mass of H2O = (2x1) + 16 = 18g/mol

Mass of H2O from the balanced equation = 2 x 18 = 36g.

From the balanced equation above, we can see evidently that:

80g of NaOH reacted to produce 36g of H2O.

5 0

3 years ago

things required for life, including heat, water, nutrients, salts and oxygen are called "___________ substances."

Contact [7]

Answer:

Vital

Explanation:

Hello! The factors mentioned previously are essential substances for the life and health of our bodies. Not only in humans, but also for animals. They are factors that are linked and contribute to physical and mental energy, growth and life. Are essentials because humans can't live without that.

Thanks for your question! Feel free to ask more!

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3 years ago