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larisa86 [58]
3 years ago
7

A fluorine ion has nine protons and a charge of -1. how many electrons are in an ion the fluorine. A. 1 B. 9 C. 10 D. 8

Chemistry
2 answers:
ElenaW [278]3 years ago
8 0
The neutral Fluorine atom has 9 electrons AND 9 protons. So if the F has a -1 charge, then another electron is added so F will now have 10 electrons. so answer C
madam [21]3 years ago
4 0
10, it has gained and electron which increases the charge, as the -1 indicates 
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The mass of an iron(II) sulfate crystal is 8.36 g.How many moles of FeSO4 are in the crystal?
Yuki888 [10]

The number of moles present in the FeSO4 are 0.055 mol.

<u>Explanation:</u>

  • The mass of a substance containing the same number  atoms in 12.0 g of 12C is known as mole. One mole of any substance is equal to  6.023 x 10^23. The moles of a substance can be determined by using the formula,

                 Number of moles = mass in grams / molecular mass

Given,

    mass = 8.36 g,

    molecular mass of FeSO4 = 151.908 g / mol

         number of moles = 8.36 / 151.908

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5 0
3 years ago
Match each chemical reaction with the type of reaction that best describes it.
r-ruslan [8.4K]

2 Al + 6 HCl → 2 AlCl₃ + 3 H₂ (single displacement)

Ca + Br₂  → CaBr₂ (synthesis)

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8 0
3 years ago
The smallest unit which maintains the physical properties of a compound is a(n _____. atom element molecule alloythe smallest un
LuckyWell [14K]
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5 0
3 years ago
calculate the mols of alt gas if the volume is 0.97 liters at a temperature of 12 C and the pressure is 152 Kpa’s
katrin2010 [14]

Answer:

0.062mol

Explanation:

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PV = nRT

Where;

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V = volume (L)

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T = temperature (K)

Based on the information provided;

P = 152 Kpa = 152/101 = 1.50atm

V = 0.97L

n = ?

T = 12°C = 12 + 273 = 285K

Using PV = nRT

n = PV/RT

n = (1.5 × 0.97) ÷ (0.0821 × 285)

n = 1.455 ÷ 23.39

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4 0
2 years ago
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Answer:

A

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looking at both equity

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I would rather say secured bond fit into not being backed by any specific collateral

7 0
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