<h3>
Answer:</h3>
The international scientific units of measurements
<h3>
Explanation:</h3>
- SI units are units of measurement that are accepted and agreed upon globally as standard units of measurements.
- Examples include, meters(m) to measure length, kilograms(kg) to measure mass and seconds(s) to measure time among others.
- SI units can however, be converted to other units using multiplication factors. For example to convert kg to g we multiply the number of kg with 1000.
199.5 g of sucrose is needed to make 665 ml of 30 % weight by volume percent solution.
<h3>What is percent solution?</h3>
Percent solution is defined as a convenient way to record concentration of solution.It is a expression which relates solute to solvent as,mass of solute/mass of solution ×100.There are two types of percentage solutions percent weight by volume and percent volume by volume .Advantages of using percent solutions is that molecular weight of compound is not required.
This example is percent weight by volume where mass of solute is calculated as,%(w/v)= mass of solute/mass of solution×100
substitution of values gives,30×665/100=199.5 g
Thus ,199.5 g of sucrose is required to make 665 ml of 30 % sucrose solution.
Learn more about percent solutions,here:
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Answer : The number of silver atoms produced will be
Explanation : Given,
Number of atoms of copper =
The given balanced chemical reaction,
From the balanced chemical reaction we conclude that,
As, number of copper atoms react to give number of silver atoms.
So, number of copper atoms react to give number of silver atoms.
Therefore, the number of silver atoms produced will be