Make a He atom with a mass of 4. How many protons did you put in the nucleus?
2 answers:
Answer:
<em>1.) Make a He atom with a mass of 4. How many protons did you put in the nucleus?</em>
<u>2</u>
<em>2.) Make a Li atom with a mass number of 7. How many electrons did you place in the outermost orbital (ring)?</em>
<u>1</u>
<em>3.) Make a N atom with a mass number of 14. How many neutrons are in the nucleus?</em>
<u>7</u>
<em>4.) Make a B atom with a mass number of 11. How many electrons did you put in the second orbital (ring)?</em>
<u>3</u>
Explanation:
<em>Did it on Edgenuity and got it correct (2020).</em>
Answer:
He has two protons
Li electron has one electron in its outermost orbital.
Number of neutrons of nitrogen = seven neutrons
The second shell of boron: 3 electrons.
Explanation:
An atom is composed of electrons, protons and neutrons. The number of neutrons is determined by subtraction of the atomic number from the mass number.
The electronic configuration is already known for each of atoms in these questions according to standard tables.
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<span>Answer:
Moles Ca(NO3)2 = 100 x 0.250 / 1000 = 0.025
Ca(NO3)2 >> Ca2+ + 2NO3-
Moles NO3- = 2 x 0.025 = 0.05
Moles HNO3 = 400 x 0.100 / 1000 = 0.04
Total moles = 0.05 + 0.04 = 0.09
Total volume = 500 ml = 0.500 L
M = 0.09 / 0.500 = 0.18</span>
A matter in the solid phase has a fixed shape and volume.
Copper has 29 protons in the nucleus, while Nickel has 28 protons.
