3 years ago

An aluminum ion has a +3 charge. What change did the atom undergo to attain this charge?

1 answer:

8 0

When an ion loses electrons, it becomes a positive ion even though it does not lose protons. If there are more protons than electrons in the ion, the ion will have a positive charge.

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24.3 2 An artifact classified as seeds, found in a site at Newlands Cross, Ireland, is found to have a 14C radioactivity of 0.10

Rina8888 [55]

Answer:

Age ≅ 7500 years

Explanation:

All radioactive decay is 1st order kinetics and described by the expression

A = A₀e^-kt => t = ln(A/A₀) / -k

k = 0.693 / t(half life) = (0.693 / 5730)yrs⁻¹ = 1.21 x 10⁻⁴ yrs⁻¹

t = Age = [ln(0.103/0.255) / - 1.21 x 10⁻⁴] yrs = 7500 years

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3 years ago

Is there more or less air near sea level

vampirchik [111]

there is more air near sea level

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2 years ago

Question 8

nexus9112 [7]

72 degrees C (minus 273)

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3 years ago

Hydrogen chloride, HCl, is classified as an Arrhenius acid because it produces(1) H+ ions in aqueous solution(2) Cl– ions in aqu

frozen [14]

Answer is (1) Produces H+ in aqueous solution

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3 years ago

A rock that has a mass if 180 grams dropped in a graduated cylinder that was originally filled to 52ml; it now reads 62ml. What

Vlad [161]

Answer:

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

volume = final volume of water - initial volume of water

volume = 62 - 52 = 10 mL

From the question we have

$density = \frac{180}{10} \\$

We have the final answer as

Hope this helps you

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3 years ago