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3 years ago

Students report that the sky in their area has mostly cirrus clouds. What are most likely the weather conditions in the area?

1 answer:

3 0

I believe it is fair, pleasant weather! Cirrus clouds predict fair to pleasant weather and are usually seen in the winter!

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Josh decided to mix some vinegar with baking soda. He knew that a reaction occurred because he made careful observations. He not

velikii [3]

Josh was sure that the reaction occurred because of the formation of carbon dioxide (CO₂) which is a gas.

Explanation:

Vinegar contains acetic acid (CH₃-COOH) and baking soda is sodium hydrogen carbonate (NaHCO₃). The reaction between these two compounds will produce sodium acetate (CH₃-COONa), carbon dioxide (CO₂) and water (H₂O).

CH₃-COOH + NaHCO₃ → CH₃-COONa + CO₂ + H₂O

Josh was sure that the reaction occurred because of the formation of carbon dioxide (CO₂) which is a gas.

Learn more about:

carbon dioxide

brainly.com/question/2840704

#learnwithBrainly

6 0

3 years ago

Use the equation to answer the question.

AfilCa [17]

gimme a sec im doing the quick check.

6 0

3 years ago

Read 2 more answers

Suppose you have a buffer containing 0.400 M hydrazine and 0.300 M hydrazinium chloride at equilibrium. Then you add 25.2 g of N

Lelechka [254]

I think it’s C ...............

8 0

4 years ago

Nitrogen gas is introduced into a large deflated plastic bag. no gas is allowed to escape, but as more and more nitrogen is adde

Nastasia [14]

Use the ideal gas equation: pV = nRT

=> n = RT / pV

R = 0.0821 atm*l / K*mol
T = 20 + 273.15 = 293.15 K
p = 1 atm
V = 22.4 l

=> n = 0.0821 atm*l / K*mol * 293.15K / (1atm * 22.4 l) = 1.07 mole

Answer: 1.07 mole

4 0

4 years ago

H2 and I2 react in an exothermic reaction according to the following equation:

Alborosie

Answer: The correct answer is Option D.

Explanation:

For the given chemical reaction:

$H_2(g)+I_2(g)\rightleftharpoons 2HI(g)$

Catalyst is a chemical substance which alters the rate of the reaction and does not participate in the reaction. It does not effect the equilibrium position.

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle. This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

Change in volume:

Any change in volume during equilibrium is studied on the basis of change in moles of gaseous reactants and gaseous products.

When volume is decreased, the equilibrium will shift in the direction which produces fewer moles of gas and when volume is increased, the equilibrium will shift in the direction which produces more moles of gas.

Change in pressure:

Any change in pressure during equilibrium is studied on the basis of change in moles of gaseous reactants and gaseous products.

When pressure is decreased, the equilibrium will shift in the direction, which produces fewer moles of gas and when pressure is increased, the equilibrium will shift in the direction which produces more moles of gas.

Number of moles of gases on reactant side = [1 + 1] = 2

Number of moles of gases on product side = 2

Change in number of moles = 2 -2 = 0

As, number of moles on both the side of the reaction is same. This means there will be no effect on change in volume and change in pressure.

Change in temperature:

For an exothermic reaction, heat is released during a chemical reaction and is written on the product side.

$A\rightleftharpoons B+\text{ heat}$

As, heat is released during a chemical reaction. This means that temperature is decreased on the reactant side. If the temperature in the equilibrium is decreased, the equilibrium will shift in the direction where, temperature is getting increased. Thus, the reaction will shift in right direction that is towards the product.

So, lowering the temperature of the system will shift the position of equilibrium.

Hence, the correct answer is Option D.

8 0

3 years ago