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3 years ago

The isotope carbon-14 has 6 protons and an atomic mass of 14. Carbon-14 has:

Chemistry

2 answers:

Aleks [24]3 years ago

5 0

Carbon has 7 neutrons

Hope this helps

gtnhenbr [62]3 years ago

3 0

8 neutrons and 6 electrons.

If the atomic mass is 14, then the neutron count would be 8, because 8+6=14.

It has 6 electrons because that's its (I think) atomic number.

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A sample of metal has a mass of 19.67 g, and a volume of 5.90 ml. what is the density of this metal?

pishuonlain [190]

Density
=mass÷volume
=19.67÷5.90
=3.33 g/ml

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3 years ago

The specific heat of copper is 0.40 joules/ g °c. How much heat is needed in joules to change the temperature of a 55 gram subst

Snezhnost [94]

Answer : The amount of heat needed is, 1188 J

Explanation :

Formula used :

$q=m\times c\times (T_2-T_1)$

where,

q = heat needed = ?

m = mass of copper = 55 g

c = specific heat capacity of copper = $0.40J/g^oC$

$T_1$ = initial temperature = $20.0^oC$

$T_2$ = final temperature = $74.0^oC$

Now put all the given values in the above formula, we get:

$q=55g\times 0.40J/g^oC\times (74.0-20.0)^oC$

$q=1188J$

Thus, the amount of heat needed is, 1188 J

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3 years ago

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slega [8]

Answer:

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Explanation:

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2 years ago

2. 27.8 mL of an unknown were added to a 50.0-mL flask that weighs 464.7 g. The total mass of the flask and the liquid is 552.4

agasfer [191]

Answer:

$d=4.24x10^{-4}\frac{lb}{in^3}$

Explanation:

Hello there!

In this case, according to the given information, it turns out firstly necessary for us to set the equation for the calculation of density and mass divided by volume:

$d=\frac{m}{V}$