Monday

April 21, 2014

April 21, 2014

Total # Posts: 11

**Chemistry**

A 100.0mL solution containing aqueous HCl and HBr was titrated with 0.1290M NaOH. The volume of base required to neutralize the acid was 47.56mL. Aqueous AgNO3 was then added to precipitate the Cl- and Br- ions as AgCl and AgBr. The mass of the silver halides obtained was 0.98...

**Math**

a.) how far are the guy wires anchored from the tower? b.)how long is the longer wire? c.)how tall is the tower?

**Math**

A vertical tower is supported by guy wires anchored at a point on the ground. The longer wire is attached to the top of the tower and makes an angle of 53 with the ground. The shorter wire makes an angle of 21 with the ground. The shorter wire is 80 ft. long. Where would the s...

**Math**

Find the linear speed in feet per minute of a seat on the Ferris wheel. v= r.w How do I find out "w"? r= 25 ft. arc= 40 ft. angle= 58° 1 revolution= 157 ft./revolution

**Chemistry**

How many milliliters of a 0.20 M of glucose (C6H12O6) solution are needed to provide a total of 25.0 g. of glucose? Molarity(M)= Moles of Solute/Liters of Solution

**Chemistry**

How many grams of dichloromethane result from reaction of 2.62 kg of methane if the yield is 43.5 %? CH4+2Cl -> CH2Cl2+2HCl

**Math**

I subtracted the populations and got 488,000 people. Then I took that number and divided by 38.935 million to get the decimal answer and after that, I multiplied the decimal by 100 to get the annual percentage growth rate of 1.25% Would that be the correct answer?

**Math**

I know that year 2010, the population is 38.447 million and year 2011, the population is 38.935 million. The formula given: A=36.1e^(0.0126*t) Determine the population in 2010 and 2011 to nearest thousand people. Use these values to determine the increase in population to the ...

**Math-Exponential functions**

For part 2, A(t)= $51,429 Q(t)=$54,142 C(t)= $55,116 For part 3, I meant when will each of the 3 investments grow to a value of $30,000. So, if I graphed the functions and look at the tables, would it help me determine the years?

**Math-Exponential functions**

An investment of $5,000 is made with three options:6% coumpounded annually, quarterly, and continuously. 1.) Create three functions 2.)What will be the value of each investment after 40 years? 3.)Which of the three investments will grow to a value of $30,000? 4.)What will be t...

**arithmetic**

7.86*4.6

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