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statuscvo [17]
3 years ago
11

Can anyone explain and answer?

Chemistry
1 answer:
blsea [12.9K]3 years ago
5 0

Answer:

I would say C.)

Explanation:

Freezing and condensation are both ways that heat is let out from an object.

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A precipitate forms when mixing solutions of sodium fluoride (NaF) and lead II nitrate (Pb(NO3)2). Complete and balance the net
Leya [2.2K]

Answer:

See explanation

Explanation:

The molecular equation shows all the compounds involved in the reaction.

The molecular equation is as follows;

2NaF(aq) + Pb(NO3)2(aq) -------> PbF2(s) + 2NaNO3(aq)

The complete ionic equation shows all the ions involved in the reaction

The complete ionic equation;

2Na^+(aq) + 2F^-(aq) + Pb^2+(aq) + 2NO3^-(aq) -------->PbF(s) + 2Na^+(aq) +2NO3^-(aq)

The net Ionic equation shows the ions that actually participated in the reaction

The net ionic equation is;

2F^-(aq) + Pb^2+(aq)--------> PbF(s)

3 0
3 years ago
In chemical compounds, atoms like to have 8 electrons in their outer shell, this gives them __________.
tresset_1 [31]
It's A
a. the electron configuration of a noble gas. 
8 0
3 years ago
Read 2 more answers
A conductor allows heat to flow easily while an insulator
koban [17]

Answer:

an insulator is a substance that does not readily allow the passage of heat or sound.

Explanation:

7 0
3 years ago
Read 2 more answers
What is the melting point of wrought iron in degrees celcius?
Flura [38]
The melting point of iron is 2,800°F or <span>1,538°C.</span>
6 0
3 years ago
How much heat, in joules and in calories, must be added to a 75.0–g iron block with a specific heat of 0.449 j/g °c to increas
lianna [129]

Answer:

Q=50,849.25J\\\\Q=12,153.3cal

Explanation:

Hello!

In this case, given the mass, temperature change and specific heat, it is possible to compute the required heat in joules as shown below:

Q=mC(T_2-T_1)\\\\Q=75.0g*0.449\frac{J}{g\°C}(1535\°C-25\°C)\\\\Q=50,849.25J

Now, since 1 cal =4.184 J, this result in calories is:

Q=50,849.25J*\frac{1cal}{4.184J}\\\\Q=12,153.3cal

Best regards!

7 0
3 years ago
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