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2 years ago

Which pair of elements is MOST likely to chemically combine and form ionic bonds?

1 answer:

dsp732 years ago

5 0

The right answer for the question that is being asked and shown above is that: "C. carbon and hydrogen." The pair of elements is MOST likely to chemically combine and form ionic bonds are <span>carbon and hydrogen </span>

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Ghella [55]

potassium reacts the most vigorously.

7 0

2 years ago

A kayak travels in a lake at an average speed of 35 m/min. If the perimeter of the lake

DanielleElmas [232]

Answer: 4 hours

Explanation:

It takes the kayak 1 minute to travel 35 meters.

Divide the total (8400m) by the amount of meters per minute (35m)

$\frac{8400m}{35m} =240minutes$

Now convert into hours. (Remember that 1h has 60min)

$240min(\frac{1h}{60min})=4h$

6 0

2 years ago

Chemist A burns 10.000 grams of C₂H₆ in a constant-volume container at 25ºC. Chemist B burns an unknown mass of C₂H₆ in a consta

alexandr1967 [171]

Answer:

10.000 grams

Explanation:

For the first law of thermodynamics, the energy must be conserved, that means that the energy in form of heat (Q) must be equal to the sum of work (W) and internal energy(ΔU) :

Q = W + ΔU

ΔU depends on the temperature and W in the variation of pressure and volume. Q depends on the temperature, but also the mass. So, there is the same temperature, ΔU is equal for both reaction, if there is no work done, the heat must be equal for both of them. So the mass such be the same.

5 0

2 years ago

A solution with a pH = 13 has approximately how many moles of OH– ions per liter?

GuDViN [60]

Answer :

(A) The number of moles of $OH^-$ ions per liter is, 0.1 moles/L

(B) The number of molecules of $H^+$ ion is, $6.022\times 10^{10}$

(C) The pH of the solution will be, 4

<u>Solution for part A :</u>

First we have to calculate the pOH of the solution.

As we know that,

$pH+pOH=14\\\\13+pOH=14\\\\pOH=1$

Now we have to calculate the moles of $OH^-$ ion per liter.

$pOH=-\log [OH^-]\\\\1=-\log [OH^-]$

$[OH^-]=0.1moles/L$

<u>Solution for part B :</u>

First we have to calculate the $H^+$ ion concentration.

$pH=-\log [H^+]\\\\13=-\log [H^+]$

$[H^+]=10^{-13}moles/L$

Now we have to calculate the number of molecules of $H^+$ ion

As, 1 mole contains $6.022\times 10^{23}$ number of molecules of $H^+$ ion

So, $10^{-13}$ moles contains $6.022\times 10^{23}\times 10^{-13}=6.022\times 10^{10}$ number of molecules of $H^+$ ion

<u>Solution for part C :</u>

$pH=-\log [H^+]\\\\pH=-\log (1\times 10^{-4})$

$pH=4$

6 0

3 years ago

Read 2 more answers

what occurs when the extinguishing agent reacts with the cooking oil to form a soapy foam blanket that provides separation betwe

umka2103 [35]

Cooking oil and the extinguishing agent combine to produce saponification, which creates a soapy foam blanket that separates fuel and oxygen.

<h3>What takes place when you add foam to a fire?</h3>

These are the ways foam functions: The foam smothers the flames by covering the fuel surface. The foam covering keeps the fuel surface and the flames/ignition source apart. Foam cools the fuel as well as any nearby metal surfaces.

<h3>What are some uses for a foam fire extinguisher?</h3>

The best and safest fire extinguisher to use on fires involving solid combustibles and flammable liquids (Class B) is foam (Class A). Typically, when liquids like gasoline, diesel, paint, oil, solvents, or spirits are burned, it can result in potentially deadly fires.

To know more about fire extinguisher visit:-

brainly.com/question/28901632

#SPJ4

6 0

8 months ago