Questions Asked onOctober 19, 2019

1. chemistry

the compound al2o3 contains 53% metal ,what is the relative atomic mass of aluminium

asked by lweendo
2. Chemistry

What volume of glycerine C3H8o3. Density 1.26g/ml, should be taken to obtain 2.50mol of glycerine

asked by Lumamba
3. Math

Complete each statement with the appropriate measurement or symbol. 48 c = _ qt 96 oz _ 5 lb 6 yd, 1 ft = ft 6 1/2 lb = _ oz

asked by Cup of Tae w/ Suga
4. history

James Oglethorpe's decision to recruit Highland Scots to establish a settlement on the Altamaha River is evidence of which of the following reasons for colonization as described in the Charter of 1732? Economic - The Highland Scots were slave holders who

asked by ????
5. Probability

Of the 1286 students enrolled at the community college last fall, 367 registered early. Based on this data which approach would be best to find the probability of students who will register early this fall? classical approach subjective approach***

asked by Ember Lovet
6. U.S. Studies

What were the two groups that emerged after the constitutional convention? What did each group want?

asked by Spencer
7. Geometry

AB ∥ DC, DE ⊥ AB , AD = BC, m∠ADC = 134° AD = 40, DC = 32, ABCD is a trapezoid. Find: Area of ABCD

asked by Simba
8. Social Studies

1.Which is one reason there was conflict between the colonists and Britain?

asked by user
9. chemistry

A 2.118 g sample of a solid mixture containing only potassium carbonate ( MM=138.2058 g/mol ) and potassium bicarbonate ( MM=100.1154 g/mol ) is dissolved in distilled water. A volume of 30.20 mL of a 0.763 M HCl standard solution is required to titrate

asked by mike
10. Math

find the volume bounded by the parabolic cylinder z=4-x^2 and the planes x=0, y=0, y=6 and z=0 I just want some help figuring out the limits of this question : So for z, we have to integrate from z=0 to z=4-x^2 (am i right?) W.r.t. y, we should integrate

asked by Aryaa
11. English

what are the principle parts of verbs a. the base forms of verbs with no endings added b. the present, present participal, past, and past participal of verbs***** c. the most common verbs of the most common verbs d. action, linking, regular and irregular

asked by wyatt love harry potter
12. Physics

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 453 N and F2 = 400 N. (Assume up and to the right as positive directions.)(F1 is 8degrees and F2 is 35degreed) (a) What is the resultant of these two

asked by Anonymous
13. Physics

I need the answers Fx = 453 cos 8 + 400 cos 35 Fy = 453 sin 6 + 400 sin 35 |F| = sqrt ( Fx^2 + Fy^2) tan theta = Fy/Fx where theta is angle above x axis |A| = |F| / 3805 same angle above x axis = theta

asked by Anonymous
14. physics

tarzan swings from a vine whose length is 10m in a vertical circle under the influence of gravity .when vine make an angle of 20 degree with the vertical then find out length of arc and centripetal force experienced at this instant when tarzan has a speed

asked by Anonymous
15. Physics

An aeroplane's compass indicates that it is headed due to North, and it airspeed indicator shows that is moving through the air at 24 0 km/h. If there is a 100 km/h wind from west to east. In what direction should the pilot head to travel due north? What

asked by Khushi
16. physics

One boy standing on a bridge throws a stone horizontally at a velocity of 12m/s. If the bridge is 10m above the river, how far horizontally will the stone go from him?

asked by Patrick
17. Physics

Describe the force board experiment to show how to obtain a resultant of two non-parallel coplaner forces acting at a point

asked by ....
18. algebra

what is the greatest prime you must consider to test whether 4178 is a prime?

asked by Kim
19. biology

Who discovered that only green parts (leaves) of plants photosynthesized releasing oxygen and not roots? a. van Helmont b. Priestly c. Ingenhousz d. van Niel e. Blackman

asked by Ally
20. algebra

A farmer has 160 bushels of apples for sale at a farmers market .he sells an average of 15 1/4 bushels each day .After 7 days ,what is the change in the total number of bushels he has for sale at the farmers market. Please help me work this out I dont

asked by James
21. Physics

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 453 N and F2 = 400 N. (Assume up and to the right as positive directions.)(F1 is 8degrees and F2 is 35degreed) (a) What is the resultant of these two

asked by Anonymous
22. math

John is fencing a larger rectangular pen and creating 3 smaller pens of equal area (2 lengths and 4 widths). John wants to maximize the area contained by the pens. John plans on using 1200m of fencing. What is the area and dimension of the 3 smaller pens?

asked by Parveen
23. Math

Jason is keeping track of the amount of money that he spends on gas each month. Below are the amounts for last month: \$24.75 \$30.25 \$34.60 \$38.90 What is the best estimation for the amount that Jason spent on gas last month? A) 20 + 30 + 30 + 40 B) 20 + 30

asked by LostIdentities
24. math

i'm not very good at math whats an easy way to learn rise over run and slope, i'm an 8th grader i really need help.

asked by sarah
25. Mathematics

A pyramid 8cm high stands on a rectangular base 6cm by 4cm. Calculate volume of the pyramid.

asked by Susan
26. Math

Which choice correctly compares the two numbers? A) 4.2 > 5.6 B) 4.8 < 4.6 C) 5.1 < 5.2 D) 5.2 > 5.3

asked by LostIdentities
27. Math

Im still having problems with this simple question: d^2y/dx^2 + 2 dy/dx +5y=0 With initial conditions y=1, x=0 and dy/dx=1 I have gone through and checked and ended up with no solution given the initial conditions. The Furthest I have got is ending with

asked by Mathy
28. Chemistry

Calculate the volume of CO2 that would be produced from 0.5 mole of Fe2O3 according to the equation.Fe2O3(s)+3CO(g)=2Fe(s)+3CO2(g). (1mole of a gas occupies 22.4dm3 at s.t.p)

asked by Joy
29. Career guidance

Maths lit geography life science tourism Can I do nursing with this subject?

asked by Mike
30. math

At the end of a​ party, three fourths cup of dip is left. Jim divides four fifths of the leftover dip equally between 2 friends. How much dip does each friend​ get?

asked by Anonymous
31. Physics

Two cars approach each other; both cars are moving westward, one at 78 km/h, the other at 64km/h. A) what is the velocity of the first car relative to (in the frame of reference of) the second car? B)after the pass, will their relative velocity change?

asked by Ashley
32. science

a runner runs 100.0 m in 9.85 seconds. If he has a kinetic energy of 3400.0 J what is the mass?

asked by Anonymous
33. Science

Is 3NaHCO3+C6H8O7=C6H5Na3O7+3CO2+3H20 A combustion reaction?(alka seltzer tablet reacts with water).

asked by Ania
34. chemistry

A 5.00 L solution has [HC7H5O2] = 0.100 M and [Ca(C7H5O2)2] = 0.200 M . What is the pH of the solution after 10.0 mL OF 5.00 M NaOH is added? Assume the volume of the solution does not change .Ka for HC7H5O2 = 6.3x10^-5.

asked by JAY_ndabeh
35. Physics

Ann is driving down a street at 55 km/h. Suddenly a child runs into the street. If it takes Ann 0.75 s to react and apply the brakes, how many meters will she have moved before she begins to slow down?

asked by Ashley
36. biology

When protons accumulate on one side of the membrane and then flow back across the membrane through ATP synthase it is called a. chemiosmosis b. electron transport chain c. charge separation d. primary photo-event

asked by Ally
37. history

what was the biggest war in usa history

asked by Welp_oh_dear
38. Physics

What is the force of attraction between two masses of 5kg and 8kg at a distance of 60cm apart

asked by saadatu
39. Pre-algebra

8+24+√5? I have no idea what the answer is 😬

asked by nobody
40. Math

PJ needs \$60 for a class trip. He has \$32 already saved and can earn \$4 an hour mowing lawns. How many hours must PJ work to have the money he needs? Write an Equation and solve

asked by Kylie
41. Geometry

8cos30° × tan60°+2 sin²65°+2cos²65°

asked by Sarah
42. Math

What type of problems can we solve using the greatest common factor

asked by Evelyn
43. math

olivia can complete 6 sprints per minute.write and solve a direct variation eqation to find how many sprints she can expect to complete in 25 minutes. i really need the answer

asked by sarah
44. Physics

While John is traveling along an interstate highway, he notices a 160-mile marker as he passes through town. Later John passes another mile marker,115. A ) what is the distance between town and john’s current location? B)what is john’s current

asked by Ashley
45. English

How is the book Their Eyes Were Watching God by Zora Neal Hurston a bildungsroman? What are some examples from the book that support the answer?

asked by Raven
46. Physics

Light from the sun reaches earth in 8.3 min. The velocity of light is 3.00 x 10^8 m/s. How far is earth from the sun.

asked by Ashley
47. Math

Ben and Maddie both use triangles to determine the slope of the line.Ben determines the slope of line l to be -2. Maddie says the slope of line is 1/2.Who is correct?

asked by sarah
48. Physics

I need the answers Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 453 N and F2 = 400 N. (Assume up and to the right as positive directions.)(F1 is 8degrees and F2 is 35degreed) (a) What is the

asked by Anonymous
49. Science

A rectangular container has a 10 cm square base and contains water to a depth of 12 cm. when a stone of a mass of 600 g is gently lowered into the water , the level rises to 14 cm.calculate the volume of water displaced

asked by Gayathri
50. physics

l need answers with the aid of scale drawing

asked by success
51. Physics

You dive a car 2.0 h at 40km/h , then 2.0 h at 60 km/h A) what is you average velocity B) do you get the same answer if you drive 100 km at each of the two speeds above

asked by Ashley
52. Physics

What average force is necessary to accelerate a projectile at rest to a speed of 125m/s which has a mass of 9.20g the distance of .800m along the barrel of a rifle?

asked by Alex
53. pre-algebra

wyatt invests \$6000 in two accounts, the first pays 10 percent simple interest, the second pays 11 percent simple interest. At the end of the year he has earned \$640 in interest. How much is invested at each rate?

asked by miranda