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NARA [144]
3 years ago
10

What type of energy results from the

Chemistry
1 answer:
jeka943 years ago
3 0

Answer:

C fghhtrsfeagutyrwraqedf

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How do the properties of the elements change as you move across a period on a periodic table from left to right?
Tomtit [17]
B) The elements become less reactive.
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3 years ago
Consider the gold isotope 197Au. How many electrons, protons, and neutrons are in a neutral 197Au atom?
tangare [24]

Answer:

The 197Au isotope has 79 protons, 79 electrons and 118 neutrons

Explanation:

Step 1: The isotope = 197Au

Step 2: Calculate neutrons, electrons and protons

197 = Number of protons + number of neutrons

Isotopes always have the same proton number ( is the same as the atomic number). For Gold (Au) is this 79.

The number of electrons is equal to the number of protons in a neutral atom. Since we have 79 protons, there are also 79 electrons.

All isotopes of Au have a different number of neutrons.

The number of neutrons = 197 -79 = 118 neutrons

The 197Au isotope has 79 protons, 79 electrons and 118 neutrons

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3 years ago
¿Cuál es la carga eléctrica del átomo? Justificar.
Ksivusya [100]

Answer:

Es la cantidad de protones menos la cantidad de electrones.

Explanation:

Es la cantidad de protones menos la cantidad de electrones.

Por cierto, suscríbete a Kevin Tuna Music

8 0
3 years ago
For every 4 hours that Alexa babysit her younger sister, her mom pays her $50
tiny-mole [99]

Answer:12.5

Explanation: Divide 50$ by the 4 hours and you will get 12.5 which is $12.50.

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How many atoms are there in one mole of carbon ? (Show Work)
bixtya [17]

6.022 x 10^23, this is avogados number, a mole has 6.022 x 10^23 of anything, but in this instance, it is 6.022 x10^23 atoms of carbon.

8 0
4 years ago
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