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Nookie1986 [14]
3 years ago
7

What is a common property of metals? a) insulates from electricity b) conducts electricity c) has very little reactivity' d) is

liquid at room temperature
Chemistry
2 answers:
Alex Ar [27]3 years ago
7 0

Answer:

it conducts electricity

Explanation:

DedPeter [7]3 years ago
3 0

Answer:

B) conducts electricity

Explanation:

This answer can be answered by the process of elimination.  Metals are excellent conductors of electricity, which means A is out, and metals are also known to have medium reactivity and have high melting points, meaning C and D are also out.

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Which of these statements best describes how an increase in the amount of Sun’s heat reflected by the Earth’s surface and atmosp
Korolek [52]

If the Suns heat is being reflected, then it is making the Earth cooler.

7 0
3 years ago
What is the product for MgBr2+ Cl2
nikklg [1K]

???...........…..............

5 0
3 years ago
Given the partial equation: NO3− Pb2 → NO2 Pb4 , balance the reaction in acidic solution using the half-reaction method and fill
Fed [463]

Answer : The balanced reaction in acidic solution is,

2NO_3^-+1Pb^{2+}+4H^+\rightarrow 2NO_2+1Pb^{4+}+2H_2O

Explanation :

The given partial equation is,

NO_3^-+Pb^{2+}\rightarrow NO_2+Pb^{4+}

First we have to separate into half reaction. The two half reactions are:

NO_3^-\rightarrow NO_2

Pb^{2+}\rightarrow Pb^{4+}

Now we have to balance the half reactions in acidic medium, we get:

NO_3^-+2H^++1e^-\rightarrow NO_2+H_2O       ............(1)

Pb^{2+}\rightarrow Pb^{4+}+2e^-     ............(2)

Now we have to balance the electrons of the half reactions. When we are multiplying the equation (1) by 2, we get

2NO_3^-+4H^++2e^-\rightarrow 2NO_2+2H_2O  ...........(3)

Now we have to add both the half reactions (2) and (3), we get the final balanced chemical reaction.

2NO_3^-+1Pb^{2+}+4H^+\rightarrow 2NO_2+1Pb^{4+}+2H_2O

3 0
3 years ago
The strong force governs what goes on in the nucleus of atoms.
liubo4ka [24]
Maybe u should choose D beacause it makes more sense.
6 0
3 years ago
An antacid tablet weighing 0.853g contained calcium carbonate as the active ingredient, in addition to an inert binder. When an
ArbitrLikvidat [17]

Answer:

0.22 g of CO2 were produced.

Explanation:

First, let's represent what is happening with an hypothetical chemical equation just to have a clearer vision of the presented process:

CaCO3 (aq) + 2 HAc (aq) → CaAc2 (aq) + H2O (l] + CO2 (g)

We have a tablet that has CaCO3 as the active ingredient that when combined with an acid, in this case represented as HAc, reacts producing a Calcium salt, water and carbon dioxide that will leave the solution as gas.

Having said that, we know that the initial mass of the reactants will have to maintain during the chemical reaction, or what is the same, the quantity of matter during the process will not change. So, if we have a tablet that weighs 0.853 g and we add an acid solution of 56.519 g, then we have that the initial mass of the reactants will be:

0.853 g from tablet + 56.519 g from acid solution = 57.372 g

This amount of matter should be the same after the reaction, but we know that the CO2 gas will leave the solution once it's formed, so considering that the resulting solution weighs 57.152 g we could calculate the mass of CO2 produced:

57.372 g of initial mass - 57.152 g of resulting solution = 0.22 g of CO2 that left the aqueous solution as gas.

5 0
3 years ago
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