# Questions Asked onDecember 27, 2019

1. ## chemistry

Consider a sample of 10.0 g of the gaseous hydrocarbon C2H6 to answer the following question: How many carbon atoms are present in a 10.0 g sample? (The question is asking for the number of carbons in the sample, not the molecule). When answering the

2. ## biology

with the aid of map , describe the local biotic communities in Nigeria

3. ## calculus

Sketch the region enclosed by the curves x=64−y^2 and x=y^2−64. Decide whether to integrate with respect to x or y. Then find the area of the region. Area =

4. ## calculus

Find the volume of the solid obtained by rotating the region bounded by y=x and y=√x about the line x=2. Volume =

5. ## Math

Calculate: The first term of a linear sequence is 5 and the common difference is 3, find the 15th term of the sequence

6. ## Math

Using ruler and a pair of compasses only construct a quadrilateral ABCD with |AB|=9cm, |BC|=10cm, |AD|=7.5cm, angle ABC =45°and angle BAD =135°

7. ## Math

Flying against the wind, a jet travels 2340 miles in 3 hours. Flying with the wind, the same jet travels 8960 miles in 7 hours. What is the rate of the jet in still air and what is the rate of the wind?

8. ## Science

200ml of 0.15M H3AsO4 given Ka1=10^-3 Ka2=10^-7 Ka3=10^-12 50ml of 0.6M Na2HAsO4 and 100ml of 0.1M Naish are mixed. pH of solution is

9. ## Early Childhood Edu

Activities that have no single right outcome, and no possibility of failure are called __________ activities. A experimental B free thinking C open-ended D safe result

10. ## Maths

F is a function if and only it f is one to one

11. ## calculus

Find the arc length of the curve y=ln(cosx) from x=0 to x=π/6. Length:

12. ## calculus

Find the volume of the solid obtained by rotating the region bounded by the curves y=x^4,y=1 about the line y=4 . Answer:

13. ## calculus

Find the volume of the solid obtained by rotating the region bounded by y=x and y=x√ about the line x=2. Volume =

14. ## biology

How many grams of caco3 will be formed by passing excess co2 gas through 100ml of 0.25M ca(H)2 solution?

15. ## Careers

Geography,Life Science,Maths Lit what are possible career

16. ## physics

A force of 16 N pushes on a 8 kg cart. How fast will the cart be going when it has traveled 2m?

17. ## Physics

A ball of mass 8 kg falls from a height of 100 m. Neglecting air resistance, calculate it's total energy after falling a distance of 40 m

18. ## social studies/science

Why would the Task Force recommend that the wind farm be placed 10 nautical miles off the coast?

19. ## Math

In one year, New York received 62.51 inches of rain. In November the city received 25% of that rainfall. About how much rain did New York recieve in November?