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Ksenya-84 [330]
2 years ago
7

0.007 decigrams = ? micrograms

Chemistry
1 answer:
bezimeni [28]2 years ago
7 0

0.007 - ?micrograms

0.007= 700micrograms

multiply the mass value by 100000

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Determine whether the statement about identifying a halide is true: Regardless of any concentration of ammonium solution, the pr
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Answer:

False

Explanation:

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What is the relationship between the oxygen cycle and the carbon cycle
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A solution is prepared by mixing 93.0 mL of 5.00 M HCl and 37.0 mL of 8.00 M HNO3. Water is then added until the final volume is
Charra [1.4K]

Answer:

[H^{+}] = 0.761 \frac{mol}{L}

[OH^{-}]=1.33X10^{-14}\frac{mol}{L}

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Explanation:

HCl and HNO₃ both dissociate completely in water. A simple method is to determine the number of moles of proton from both these acids and dividing it by the total volume of solution.

n_{H^{+} } from HCl = [HCl](\frac{mol}{L}). V_{HCl}(L)  \\ n_{H^{+} } from HNO_{3}  = [HNO_{3}](\frac{mol}{L}). V_{HNO_{3}}(L)

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n_{H^{+} } from HCl = (5.00)(0.093)

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n_{H^{+} } from HNO_{3}  = (8.00)(0.037)

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n_{H^{+}(total) } = 0.296 + 0.465

n_{H^{+}(total) } = 0.761 mol

For molar concentration of hydrogen ions:

[H^{+}]  = \frac{n_{H^{+}}(mol)}{V(L)}

[H^{+}] = \frac{0.761}{1.00}

[H^{+}] = 0.761 \frac{mol}{L}

From dissociation of water (Kw = 1.01 X 10⁻¹⁴ at 25°C) [OH⁻] can be determined as follows

K_{w} = [H^{+} ][OH^{-} ]

[OH^{-}]=\frac{Kw}{[H^{+}] }

[OH^{-}]=\frac{1.01X10-^{-14}}{0.761 }

[OH^{-}]=1.33X10^{-14}\frac{mol}{L}

The pH of the solution can be measured by the following formula:

pH = -log[H^{+} ]

pH = -log(0.761)

pH = 0.119

5 0
3 years ago
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Answer:

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Group 13 elements tend to acquire which charge when they form ions?<br> -3<br> +5<br> +3<br> -5
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-0

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