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velikii [3]
2 years ago
8

An isotope contains 47 protons, 47 electrons, and 60 neutrons

Chemistry
1 answer:
barxatty [35]2 years ago
4 0

Answer:

3

Explanation:

becasue

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3 years ago
Which statement best describes the collision of gas particles according to kinetic molecular theory
ArbitrLikvidat [17]
The correct answer is A, <span>When particles pass close enough to one another, their attractions pull them together, and then they bounce apart with no gain or loss of energy.</span>
5 0
3 years ago
How is the composition of a meteorite relevant to finding out the composition of earth’s core?
boyakko [2]

Explanation:

Since scientists think planets and meteorites were made at the same time and in the same place, it seems logical that whatever a meteorite is made of is also what planets are made of.

5 0
2 years ago
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8. Which is Earth's path around the sun?
quester [9]

Answer:

earth's tilt

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3 years ago
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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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