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inna [77]
3 years ago
5

The relative formula mass (M) of XCO, is 84

Chemistry
1 answer:
7nadin3 [17]3 years ago
5 0

Answer:

x = 56

<em>relat</em><em>ive</em><em> </em><em>atom</em><em>ic</em><em> mass</em><em> </em><em>is</em><em> </em><em>5</em><em>8</em><em>.</em><em>9</em><em>3</em><em>3</em>

Explanation:

<em>finding</em><em> </em><em>the</em><em> </em><em>relative</em><em> </em><em>molecular</em><em> </em><em>mass</em><em> </em><em>of</em><em> </em><em>x</em><em> </em><em>first</em><em>.</em><em>.</em><em>.</em>

<em>x</em><em> </em><em>+</em><em> </em><em>(</em><em>C</em><em> </em><em>×</em><em>1</em><em>)</em><em> </em><em>+</em><em> </em><em>(</em><em>O</em><em> </em><em>×</em><em>1</em><em>)</em><em> </em><em>=</em><em>8</em><em>4</em>

<em>x</em><em> </em><em>+</em><em> </em><em>(</em><em>1</em><em>2</em><em> </em><em>×</em><em>1</em><em>)</em><em> </em><em>+</em><em> </em><em>(</em><em> </em><em>1</em><em>6</em><em> </em><em>×</em><em> </em><em>1</em><em>)</em><em> </em><em>=</em><em>8</em><em>4</em>

<em>x</em><em> </em><em>+</em><em> </em><em>1</em><em>2</em><em> </em><em>+</em><em> </em><em>1</em><em>6</em><em> </em><em>=</em><em>8</em><em>4</em>

<em>collec</em><em>t</em><em> </em><em>lik</em><em>e</em><em> </em><em>terms</em>

<em>x</em><em> </em><em>=</em><em> </em><em>8</em><em>4</em><em>-</em><em>1</em><em>2</em><em>+</em><em>1</em><em>6</em>

<em>x</em><em>=</em><em> </em><em>5</em><em>6</em>

<em>now</em><em>.</em><em>.</em><em>.</em>

<em>half</em><em> </em><em>of</em><em> </em><em>5</em><em>6</em><em>.</em><em>.</em><em>.</em>

<em>5</em><em>6</em><em>÷</em><em>2</em><em> </em><em>=</em><em>2</em><em>7</em>

<em>and</em><em> </em><em>2</em><em>7</em><em> </em><em>is</em><em> </em><em>the </em><em>atom</em><em>ic</em><em> </em><em>num</em><em>ber</em><em> </em><em>of</em><em> </em><em>cobal</em><em>t</em><em>.</em><em>.</em><em>.</em>

<em>so</em><em> </em><em>relat</em><em>ive</em><em> </em><em>atomic</em><em> </em><em>mass</em><em> </em><em>of</em><em> </em><em>cobal</em><em>t</em><em> </em><em>is</em><em> </em><em>5</em><em>8</em><em>.</em><em>9</em><em>3</em><em>3</em><em>.</em>

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