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timofeeve [1]
3 years ago
13

Show how acid and base give below dissociates in water HNO3​

Chemistry
1 answer:
lara31 [8.8K]3 years ago
3 0
The answer is b thank me later :)
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What is the % composition of Carbon in Chromium (iii) Carbonate
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Step 1 - Discovering the ionic formula of Chromium (III) Carbonate

Chromium (III) Carbonate is formed by the ionic bonding between Chromium (III) (Cr(3+)) and Carbonate (CO3(2-)):

Cr^{3+}+CO^{2-}_3\rightarrow Cr_2(CO_3)_3

Step 2 - Finding the molar mass of the substance

To find the molar mass, we need to multiply the molar mass of each element by the number of times it appears in the formula of the substance and, finally, sum it all up.

The molar masses are 12 g/mol for C; 16 g/mol for O and 52 g/mol for Cr. We have thus:

\begin{gathered} C\rightarrow3\times12=36 \\  \\ O\rightarrow9\times16=144 \\  \\ Cr\rightarrow2\times52=104 \end{gathered}

The molar mass will be thus:

M=36+104+144=284\text{ g/mol}

Step 3 - Finding the percent composition of carbon

As we saw in the previous step, the molar mass of Cr2(CO3)3 is 284 g/mol. From this molar mass, 36 g/mol come from C. We can set the following proportion:

\begin{gathered} 284\text{ g/mol ---- 100\%} \\ 36\text{ g/mol ----- x} \\  \\ x=\frac{36\times100}{284}=\frac{3600}{284}=12.7\text{ \%} \end{gathered}

The percent composition of Carbon is thus 12.7 %.

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The plant chemical which absorbs sunlight and helps make cell food is
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Explanation:

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Which type of clouds are feathery,high in the sky,and are made mostly of ice crystals?
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The cloud with those characteristics is #1
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Which temperature in Celsius (°C) does this thermometer show? –8° 0° 25° 32°
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The thermometer shows 0° Celsius which corresponds to 32° F.

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Non-metal ions are negative because...
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