Hydrogen chloride, HCl, is classified as an Arrhenius acid because it produces(1) H+ ions in aqueous solution(2) Cl– ions in aqueous solution(3) OH– ions in aqueous solution(4) NH4+ ions in aqueous solution

Answers

Answer 1

Answer:

Answer: (1) H+ ions in aqueous solution

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How many atoms are in 36 g of bromine?

Answers

Answer:

2.7*10^23

Explanation:

first work out the moles

So do 36g / 80 (80 is bromine's relative Atomic Mass number)

You have 0.45 M

Then, do 0.45 * 6.02*10^23

You get 2.7*10^23, which is your answer

What volume of carbon dioxide is produced when 0.489 mol of calcium carbonate reacts completely according to the following reaction at 0°C and 1 atm? calcium carbonate ( s ) calcium oxide ( s ) + carbon dioxide ( g )

Answers

Answer:

11.0L of carbon dioxide is produced

Explanation:

Balanced equation: $CaCO_(3)(s)\rightarrow CaO(s)+CO_(2)(g)$

According to balanced equation, 1 mol of $CaCO_(3)$ produces 1 mol of $CO_(2)$

So, 0.489 mol of $CaCO_(3)$ produces 0.489 mol of $CO_(2)$

Let's assume $CO_(2)$ behaves ideally.

So, $P_{CO_(2)}V_{CO_(2)}=n_{CO_(2)}RT$

where P is pressure, V is volume , n is number of moles, R is gas constant and T is temperature in kelvin

Plug-in all the values in the above equation-

$(1atm)* V_{CO_(2)}=(0.489mol)* (0.0821L.atm.mol^(-1).K^(-1))* (273K)$

or, $V_{CO_(2)}=11.0L$

So, 11.0L of carbon dioxide is produced

Why is it preferable to use Am in smoke detector?Low stable and highly reactive
High stability over long time and source need not be replaced
High penetration and high ionization
A good source of beta radiation and has a half-life of 432 years

Answers

Answer:

Ionization smoke detectors use americium as a source of alpha particles. Alpha particles from the americium source ionize air molecules. This makes some particles positively charged and some negatively charged. ... Because of this shielding, the smoke detector poses no radiation health risk when they are properly handled.

Explanation:

Hope this helped! :D

Click on the diagram to choose which atom is more reactive.

Answers

Answer:

Second graph is more reactive.

Explanation:

I just did the lesson myself, chose the first graph, and obviously got it wrong.

Therefore I can tell you with 100% certainty that the correct answer is graph #2 in this case. Hope this helps.

The first diagram is the atom that is more reactive

How many moles of CO2 are produced from the combustion of 6.40 mol c2h8?

Answers

C₂H8 is Dimethocain-M. In C₂H₈ two atoms of carbon are present. Combustion of 6.40 mole C₂H₈ produced 12.8 moles of CO₂.

What is combustion ?

Combustion reaction refers to burning of compound in presence of oxygen. The reaction is accompanied by heat and light. One mole of burned carbon produced one mole of CO₂ gas.

Combustion is a chemical reaction between substances ,usually including oxygen and usually accomplished by the generation of heat and light.

Here we see that in C₂H₈ there are there are two carbons present then 2 moles of CO₂ gas is produced i.e. 2 × 6.40 = 12.8 moles.

Hence, 12.8 moles of CO₂ produced in combustion of 6.40 mole C₂H₈.

To learn more about combustion refer the link below;

brainly.com/question/15117038

#SPJ2

12.8 mole of CO2 from the combustion

A biochemist is attempting to replicate a chemical reaction that commonly takes place in cells. During the chemical reaction, starch is broken down into glucose. What will most likely happen if the amount of enzyme that catalyzes this reaction is increased?

A. The reaction will stop.
B. The reaction will slow down.
C. The reaction will speed up.

Answers

C. the reaction will speed up, as the role of a catalyst is to increase the rate of reaction

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