# alberto

Most popular questions and responses by alberto
1. ## math

a fire fighter's 36 foot ladder leans against a building. the top of the ladder touches the buliding 28 ft above the ground. what is the measure of the angle of the ladder forms with the ground?

2. ## English

In my brother's keeper by Jay ... What is the conflict?

3. ## math

Jill is 20 kilometers away from Joe. Both begin to walk toward each other at the same time. Jill walks at 1.5 kilometers per hour. They meet in 5 hours. How fast is Joe walking?

4. ## Math

Rina saves \$4.50 each week. Her sister save \$2 more each week. When her sister has saved \$14 more than Rina, how much has Rina saved?

5. ## Biochemistry

You are asked to make 50 mM Tris-HCl pH 7.5. The pK of Tris is 8.1. What is the concentration of the components (Tris and Tris-H+) in the final buffer solution?

6. ## math

Sandy is 5.3 feet tall. How many centimeters tall is she? Round your answer to the nearest tenth.

7. ## Algebra

A rectangular piece of cardboard is 15 inches longer than it is wide. If 5 inches are cut from each corner, and the remaining fold up to form a box,the volume of the box is 1250 cubic inches. Find the dimensions of the piece of cardboard.

8. ## Biochemistry

You are asked to prepare 2 L of 50 mM sodium phosphate pH 7.0. The pK2 of phosphate is 6.8. What are the amounts of sodium phosphate mono basic monohydrate (NaH2PO4 • 1H2O, MW=137.99 Da) and anhydrous sodium phosphate dibasic (Na2HPO4, MW=141.96 Da) that

9. ## math

a gear on a bicycle has the shape of a circle one gear has a diameter of 4 inches and a small one has a diameter of 2 inches Justin says that the circumferences of the larger gear is 2 inches more than the circumferences of the smaller gear do you agree

10. ## en forma estandar

como se escribe 423,090,709,000 en forma estandar

11. ## programming techniques

how do modular program work, can you show me an example of it using dowhile pseudo code.

12. ## math (story problems)

Andy took a reading test. He read 97 words per minute. If a book has an average of 250 words on a page, how many pages can Andy read in one hour?

13. ## chemistry

Calculate the volume of HNO3 that must be introduced in the calorimeter,knowing that it were used 60 ml NaOH, Cc=100cal/grd and delta H=-13,5 kcal/mol.. please help me,i have no clue for this..

14. ## Physics

An astronaut has crash landed on a planet that little is known about (not even the acceleration due to gravity). She must descend a steeo cliff to find shelter, but wants to know how high the cliff is before making the attempts. She happens to have

15. ## science

What is the effect of the type of alcohol (methanol, ethanol and pentanol) on the evaporation time?

16. ## Math

I am less than 100, the sum of my digits is 8. If you divide me by 2, I am an even number. My tens digit and my ones digit are the same. What is the answer

17. ## ENGLISH

WHAT TYPE OF INTRODUCTION AND WHAT TYPE OF CONCULUSION CAN I USE TO WRITE IN MY RESEARCH PAPER? HOW DOES THE INTRODUCTION DRAW READERS INTO MY ARGUMENT, AND HOW DOES THE CONCLUSION NEATLY TIE UP MY PAPER? MY THESIS IS JUVENILE SEX OFFENDERS

18. ## Biochemistry

How do you calculate the pI of a protein?

19. ## Biochemistry

Why is it important to know the pI of a protein that you are working with?

20. ## economics

main characteristics of the market system

21. ## chemistry

Hypothesis on "behavior of solids on warming".

22. ## math

cx+7 if x2 determine any values of c which make f continuous for all real numbers (c=6) determine any values of c which make f differentiable for all real numbers ???

23. ## writing

if this is a subject verb agreement Did you know a famous animal rights activist has criticized horseracing because of the danger involved? and why

24. ## pseudocode programming

need help to write a sumsquare function module and then rewrite that !@#\$%^&tion module into an algorithm from this pseudocode. count integer square integer sumsquare integer count = 0 square = 1 do while count

25. ## algorithm

can someone tell me if this is correct. Write an algorithm that will display the sum for a given number of squares. In other words if the user enters the value 5, then the output should be 1^2 + 2^2 + 3^2 +4^2 + 5^2 = 55. sumsquare integer square integer

26. ## progra

how would i be able to write a function module for average from this pseudo-code and then use it to write an algorithm. Sum integer Num integer Count integer Count:= 0 Sum:=0 Dowhile count

1. ## fractions

Respect the vets!

posted on March 7, 2019
2. ## chemistry

Highest = NaF Medium = CH3I Lowest = CH4

posted on April 24, 2013
3. ## math

161.5 centimeters tall (thank you)

posted on June 27, 2012
4. ## math (story problems)

23.28 pages per hour

posted on June 27, 2012
5. ## physics

there is absolutely no way its that complicated. and at points it looks like you made up some values. be more clear.

posted on January 28, 2011