Is identical to the nucleus of a normal atomic mass four helium atom i.e. a doubly ionised helium atom
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.
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Answer:
Explanation:
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In this case, since the combustion of butane is:
Thus, since the molar mass of butane is 58.12 g/mol and that of carbon dioxide is 44.01 g/mol, we obtain the following mass of CO2 product:
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Answer: 2.36 grams
Explanation: One molecule of NaCl has an atomic mass of 58.4 amu. That consists of one atom each of sodium (23 amu) and chlorine (35.4 amu).
Na 23 (23/58.4) = 0.3934
<u>Cl 35.4</u> (35.4/58.4) = 0.6066
58.4 amu
For Na: (6 grams)*(0.3934) = 2.36 grams