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Rasek [7]
4 years ago
14

I need help in Chemistry

Chemistry
1 answer:
Komok [63]4 years ago
6 0
What kind of a help you need?
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What is the percent by volume of isopropyl alcohol in a solution that contains 45 ml of isopropyl alcohol in 1.4 L of water?
11Alexandr11 [23.1K]

Answer:

3.11%

Explanation:

We express a solution's volume by volume percent concentration, % v/v,

Take the ratio of the isopropyl alcohol (IPA) volume to the total volume of the solution, which is 1400 mL of water+ 45 mL of IPA,

and multiply by 100 to get the percentage:    45/(1400+45) *100 = 0.0311*100 =  3.11%

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An unsaturated solution is one that ________. an unsaturated solution is one that ________. contains the maximum concentration o
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<span>An unsaturated solution is one that has a concentration lower than it's solubility. What happens is all of the solute dissolves in the solvent. For example, dumping a spoon of sugar into coffee ends up with an unsaturated solution. Because all the sugar dissolves into the solvent (the coffee).</span>
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Which part of an of the helium atom is positively charged
olchik [2.2K]
Nucleus because it is made of protons (which means positively charged)
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Element A has 15 protons. Determine the number of neutrons in its isotope with mass number 33.
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33 - 15 = 18
This element is P-33 
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What type of reaction is shown in this thermochemical equation? A + B + heat → C + D
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The reaction, as what is depicted in the thermonuclear equation is one of the best example of an endothermic reaction. In addition, the endothermic process revolves around the idea that the system can also absorb the energy from its surroundings, in contrast to the idea of releasing its energy to its environment. 
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