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# Tutor profile: Arya S.

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Arya S.
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## Questions

### Subject:Chemistry

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Question:

If 52 grams of a solute are added to 423 grams of water to make a 0.76M of solution, what is the molar mass of the solute?

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Arya S.

To understand this question, we must first understand the concepts of molarity and molar mass. Molarity can be defined as the moles of solute divided by the liters of solution (M=moles of solute/liters of solution). Molar mass can be defined as the grams of the compound/mole of the compound (mm=g/mol). Also, we need to keep in mind the density of water: 1g/mL. Using this, information, we first change our grams of water to liters of water: (423g H2O)(1mL H2O/1g H2O)(1L/1000mL)=0.423L H2O Taking the information in the question and plugging them in the molarity equation (M=moles of solute/liters of solution), we get: 0.76=(moles of solute)/(0.423L of solution) Solving for moles of solute, we have: moles of solute=(0.76mol/L)(0.423L) Because the question asks us for the molar mass (g/mol), we will have to take our given mass of solute (52g) and divide it by the moles of solute (0.76mol/L)(0.423L), giving us our final answer of: Molar Mass of Solute=(52g)/((0.76)(0.423)moles)=161.8g/mol

### Subject:Biology

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Question:

Which female lion shows a higher fitness within her population? a. A female with no offspring b. A female with 10 offspring but 9 die c. A female with 3 offspring and none die d. A female with 12 offspring and 10 die e. a female with 3 offspring and 1 dies

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Arya S.

### Subject:Algebra

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Question:

Solve the following equation: 5x+2(x-8)=14-3x

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Arya S.

To solve this equation, we want to begin by multiplying out the term in the parenthesis. This will give us: 5x+2x-16=14-3x We see that we can now simplify our equation a little by adding together the 5x and 2x. This will give us: 7x-16=14-3x From here, we want to combine like terms; we want to get everything with an "x" on one side of the equal sign and everything without an "x" on the other. We can achieve this in multiple ways; but in this case, we are going to add 3x to both sides of the equation and then add 16 to both sides (what you do on one side of the equal sign, you must do to the other). This will give us an equation that looks like: 10x=30 From here we want to solve for x. We will do this by dividing both sides of the equation by 10, giving us our answer: x=10

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