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3 years ago

Is the following equation balanced? Mg + 2HCl MgCl2 + H2 yes no

Chemistry

2 answers:

Rzqust [24]3 years ago

7 0

yes

the

answer

hope

helps

:^)

viva [34]3 years ago

4 0

<h3>Answer </h3>

Yes

<h3>Explanation </h3>

Magnesium reacts with hydrochloric acid according to the equation:

Mg(s) + 2 HCl(aq) --> MgCl2(aq) + H2(g)

This demonstration can be used to illustrate the characteristic reaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas.

When magnesium reacts with hydrochloric acid, hydrogen gas and soluble magnesium chloride are produced. It takes place because magnesium is more reactive than hydrogen so it displaces it in the chloride compound. Magnesium is oxidized losing two electrons. Hydrogen is reduced from H+ ion to H2 gas when electron from magnesium is transferred to it.

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The only nonmetal in Group 14 is<br> A carbon.<br> B. oxygen.<br> C. nitrogen.<br> D. fluorine.

lesantik [10]

Answer:

carbon

Explanation:

i just googled it

4 0

3 years ago

Pls help me !!!! Is for chemistry

Sphinxa [80]

Answer:

Explanation:

1) Molarity of the solution is (0.50/0.75)x1 = 0.66666 Mol/L

2) Molar mass of NaCl is 23+35 = 58g

Molarity = (0.5/58)/0.075 = 0.115 Mol/L

3) Molar mass of $Li_{2}SO_{4}$ = 7x2 + 32 + 16x2 = 78g

Molarity = (734/78)/0.875 = 10.754 Mol/L

5) Molar mass of $Pb(C_{2}H_{3}O_{2})_{4}$

= 207.2 + ((12x2) + (1x3) + (16x2))x4

= 207.2 + (24+3+32)x4 = 443.2g

Molarity = (0.0672/443.2)/0.1335 = 0.001135 Mol/L

6) Both are the same.

Solution 1 Molarity = 1.0/1.0 = 1 Mol/L

Solution 2 Molarity = 1.0/1.0 = 1 Mol/L

Molarities of the solutions are the same.

7 0

3 years ago

The resulting daughter isotope that is formed when the atom astatine-213 undergoes alpha emission is:

bagirrra123 [75]

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay (-decay), beta decay (-decay), and gamma decay (-decay), all of which involve emitting one or more particles or photons. The weak force is the mechanism that is responsible for beta decay, while the other two are governed by the usual electromagnetic and strong forces.[1]

7 0

3 years ago

0.22 L of HNO3 is titrated to equivalence using 0.10 L of 0.1 MNaOH. What is the concentration of the HNO3?

White raven [17]

Answer:- Molarity of the acid solution is 0.045M.

Solution:- The balanced equation for the reaction of given acid and base is:

$HNO_3+NaOH\rightarrow NaNO_3+H_2O$

From the balanced equation, they react in 1:1 mol ratio. So, we could easily solve the problem using the equation:

$M_aV_a=M_bV_b$

where, $M_a$ is the molarity of acid, $M_b$ is the molarity of base, $V_a$ is the volume of acid and $V_b$ is the volume of base.

Let's plug in the given values in the equation:

$M_a(0.22L)=0.1M(0.10L)$

on rearranging the above equation:

$M_a=\frac{0.1M(0.10L)}{0.22L}$

$M_a$ = 0.045M

So, the molarity of the acid solution is 0.045M.

3 0

3 years ago

When a diprotic acid is titrated with a strong base, and the Ka1 and Ka2 are significantly different, then the pH vs. volume plo

dezoksy [38]

Complete question is;

When a diprotic acid is titrated with a strong base, and the Ka1 and Ka2 are significantly different, then the pH vs. volume plot of the titration will have

a. a pH of 7 at the equivalence point.

b. two equivalence points below 7.

c. no equivalence point.

d. one equivalence point.

e. two distinct equivalence points

Answer:

Option E - Two Distinct Equivalence points

Explanation:

I've attached a sample diprotic acid titration curve.

In diprotic acids, the titration curves assists us to calculate the Ka1 and Ka2 of the acid. Thus, the pH at the half - first equivalence point in the titration will be equal to the pKa1 of the acid while the pH at the half - second equivalence point in a titration is equal to the pKa2 of the acid.

Thus, it is clear that there are two distinct equivalence points.

4 0

4 years ago