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4 years ago

10

When group 2A element from ion they

1 answer:

Anarel [89]4 years ago

4 0

Well, knowing that group 2A elements are metals, and metals lose electrons to gain a full electron shell, we can eliminate B and D. Knowing that these are 2 electrons, that the group 2A element provides to another atom, to form an ion.

The solution is C. Lose 2 electrons.

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A two carbon chain attached to a benzene ring: ethylbenzene

6 0

3 years ago

You dissolved the 19 g of sugar in 50 mL (0.050 kg) of distilled water. Calculate the molarity of the solution you mixed in?

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First we calculate the number of moles of sugar (which I assume is sucrose).

number of moles = mass / molecular weight

number of moles of sugar = 19 / 342 = 0.055 moles

Now we may calculate the molarity of the solution.

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molarity = 0.055 / 0.05 = 1.1 M

4 0

3 years ago

Identify the bronsted-lowry acid and the bronsted-lowry base in this reaction on the left side of each of the following equation

Dahasolnce [82]

<u>Answer:</u> $NH_4^+$ is an acid, $CN^-$ is a base, $NH_3$ is conjugate base and $HCN$ is conjugate acid

<u>Explanation:</u>

According to Bronsted and Lowry's theory:

An acid is defined as a proton donor while a base is defined as a proton acceptor.

In a chemical reaction, an acid loses a proton to form a conjugate base while a base accepts a proton to form conjugate acid.

For the given chemical reaction:

$NH_4^+(aq)+CN^-(aq)\rightleftharpoons HCN(aq)+NH_3(aq)$

$NH_4^+$ is losing a proton thus it is an acid to form $NH_3$ which is its conjugate base

$CN^-$ is gaining a proton thus it is a base to form $HCN$ which is its conjugate acid

Hence, $NH_4^+$ is an acid, $CN^-$ is a base, $NH_3$ is conjugate base and $HCN$ is conjugate acid

7 0

3 years ago

What is the volume of 1g of ice in cm3?

Amanda [17]

Answer:

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

What is the volume of 1g of ice in cm3?

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Explanation:

3 0

3 years ago

PLEASE HELP!!!!!!!!!

KonstantinChe [14]

Answer:

Option "C" is the correct answer to the following question.

Explanation:

Given:

Pressure in an automobile tire (P) = 1.88 atm

Temperature (K) = 25°C = 273 + 25 = 298 Kelvin

New temperature (K1) = 37°C = 273 + 37 = 310 Kelvin

Find:

New pressure in an automobile tire (P1) = ?

Computation:

$\frac{P}{K}= \frac{P1}{K1} \\\\\frac{1.88}{298}= \frac{P1}{310}\\\\1.9557$

New pressure in an automobile tire (P1) = 1.9557

New pressure in an automobile tire (P1) = 1.96 (Approx)

5 0

3 years ago