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7 months ago

12

Which of the following is an example of an Arrhenius base? Select one: A. HNO3(aq) B. H3PO4(aq) C. H2CO3(aq) D. H2O(l) E. none o

f the above

1 answer:

Vesnalui [34]7 months ago

4 0

Answer:

The correct choice is e. Two of the above.

Explanation:

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Is radium flammable?

rewona [7]

Answer:

no

Explanation:

Radium is silvery, lustrous, soft, intensely radioactive. It readily oxidizes on exposure to air, turning from almost pure white to black. Radium is luminescent, corrodes in water to form radium hydroxide. Although is the heaviest member of the alkaline-earth group it is the most volatile.

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3 years ago

BartSMP [9]

Answer:

0.131 mol

Explanation:

To convert grams to moles, you need to use the molar mass. The molar mass is the mass number. You can find this on the periodic table. The molar mass of sodium is 22.990 g/mol.

(3.02 g)/(22.990 g/mol) = 0.131 mol

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2 years ago

How did gus get ao gay ??

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Magic, that how

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2 years ago

What is the chemical equation for the alpha decay of erbium-144

iren [92.7K]

Answer:

Er-144 -------> Dy-140 + He-4

Explanation:

Alpha decay is the release of a hydrogen nucleus. So the original atom will decrease the mass by 4 and the atomic number by 2.

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3 years ago

What is the electron configuration of the element in group 13 and period 3 on the periodic table? *

tankabanditka [31]

Answer:

The 3rd option is correct

Explanation:

The element in group 13 and period 3 is aluminium which has the electron configuration

$1{s}^{2} 2 {s}^{2} 2 {p}^{6} 3 {s}^{2} 3 {p}^{1}$

or [Ne] 3s^2 3p^1

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2 years ago