Cellular respiration uses sugar and _________ to produce carbon dioxide and water
1 answer:
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The scale will read <u>112 grams.</u>
Why?
Since we already know the percent error of the scale (12%) and we also know the mass of the block that is placed on the scale, we can calculate what will be the read of the scale by using the following formula:
We can see that the scale will read 112 grams.
Let's verify that we are right by using the following formula to verify if the obtained value for the scale read will be 12%:
Hence, we can see that the scale will read <u>112 grams.</u>
Have a nice day!
Answer:
Products: C6H5COO-Na+ (aq) + H2O (l)
Explanation:
when the benzoic acid react with sodium hydroxide, the acid part i.e carboxyl group is react with the base and produce ionic compound sodium benzoate (C6H5COO-Na+).
Chemical equation:
C6H5COOH + NaOH → C6H5COO-Na+ + H2O
Chemical reaction with physical states:
C6H5COOH (s) + NaOH (aq) → C6H5COO-Na+ (aq) + H2O (l)
Sodium benzoate is very polar ionic compound and soluble in water. If we add HCl into this solution sodium benzoate will be converted back into benzoic acid.
Properties of benzoic acid:
1. it is colorless solid.
2. it is crystalline in nature.
3. it is aromatic compound with the formula C7H6O2.
4. it is soluble into benzene, alcohol and ether.
5. its molar mass is 122.12 g/mol.
Properties of sodium benzoate:
1. Sodium benzoate is white odorless chemical compound.
2. It is aromatic compound and molecular formula is C7H5NaO2.
3. Its molecular weight is 144.11 g/mol.
4. it is sweet in taste and soluble in water.
5. it is used as preservative because of its antimicrobial properties.
Properties of Sodium hydroxide:
1. it is colorless solid and inorganic compound.
2. it is crystalline in nature.
3. its molar mass is 40 g/mol.
4. its molecular formula is NaOH.
5. its melting point is 318 °C.
