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Nikitich [7]
3 years ago
10

A rectangular box has a length of 12 cm, a width of 20 cm, and a

Chemistry
1 answer:
enot [183]3 years ago
8 0

Answer:

1100mL

Explanation:

V of a rectangular prism = l*w*h

= 12cm*20cm*5cm

=1100cm^3

1 cm^3 = 1mL

so 1100cm^3 = 1100mL

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How many bonds does argon group viii form <br><br>A. 0<br>B. 3
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4 years ago
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concentration  of  (Pb2+)
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What isotope is formed when u-238 emits an alpha particle?.
yarga [219]

A nucleus of uranium 238 decays by alpha emission to form a daughter nucleus, thorium 234.

<h3>What are isotopes?</h3>

Isotopes are atoms with the same number of protons but differ in numbers of neutrons.

Uranium-238 produces thorium-234 by alpha decay.

An α-particle is a helium nucleus. It contains 2 protons and 2 neutrons, for a mass number of 4.

During α-decay, an atomic nucleus emits an alpha particle. It transforms (or decays) into an atom with an atomic number 2 less and a mass number 4 less.

Thus, uranium-238 decays through α-particle emission to form thorium-234 according to the equation:

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Learn more about the isotopes here:

brainly.com/question/11680817

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