Answer:
Which of the following is not a pure form of a substance ?
C.mixture
Explanation:
since mixture is created due to one or more than two element,compound,molecule or atom.
Answer:
cover the taste with sugar add two times the amount your supposed to put in
Explanation:
Answer
Latitude or distance from the equator , Temperatures drop the further an area is from the equator due to the curvature of the earth. In areas closer to the poles, sunlight has a larger area of atmosphere to pass through and the sun is at a lower angle in the sky.
Answer: C. the warmer object transfers heat energy to the cooler side
Answer:
10.5g of KBr
Explanation:
molarity = moles of solute / litres of solution
we are given the volume of the solution in milliliters but the formula uses litres so we have to convert
to convert to liters we divide the number of milliliters by 1000 ( because 1 liter has 1000 milliliters. )
so liters of solution = 92.7/1000 = 0.0927 L
we can now plug in what we are given and solve for moles of solute
recall molarity = moles of solute / litres of solution
molarity = 0.955M and liters of solution = 0.0927L
so ![0.955M=\frac{moles.of.solute}{0.0927L}](https://tex.z-dn.net/?f=0.955M%3D%5Cfrac%7Bmoles.of.solute%7D%7B0.0927L%7D)
multiply both sides by 0.0927
we're left with moles of solute = 0.0885285 moles
Finally we must convert moles to grams
Molar mass of KBr = 39.0983 + 79.904 = g/mol
Using dimensional analysis we get ![\frac{0.0885285molKBr}{} *\frac{119.002g}{1molKBr}](https://tex.z-dn.net/?f=%5Cfrac%7B0.0885285molKBr%7D%7B%7D%20%2A%5Cfrac%7B119.002g%7D%7B1molKBr%7D)
the mol KBr cancel out on both sides and we get
which is equal to 10.5g (rounded)
So we can conclude that 10.5g of KBr is dissolved in 92.7mL of a 0.955M solution.