Questions and answers by

Amandeep

Questions (13)

A ball is thrown upwards from ground level and reaches a height of "h" metres after "t" seconds, given by the formula h=20t -
1. 2 answers
2. 918 views
cotx = -2 and 0 less than or equal to x less than or equal to piFind sin2x and cos2x How to get the answers of sin2x = -4/5,
1. 1 answer
2. 649 views
sinx = 4/5 and x terminates in Quadrant IIFind sin2x and cos2x How to get the answers, which are sin2x = -24/25, cos2x = -7/25?
1. 1 answer
2. 1,737 views
tanx = 5/12 and sinx<0Find sin2x and cos2x How to get the answers of sin2x = 120/169 and cos 2x = 119/169?
1. 3 answers
2. 1,521 views
Chromium metal can be plated onto an object from an acidic solution of dichrmonate tions. What average current is required to
1. 1 answer
2. 662 views
What am I doing wrong?If a current of 54 A flows into a cell for 45 minutes 30 s, determine the mass of chronium deposited. My
1. 3 answers
2. 393 views
Balance the follwoing chemical reaction in an acidic solution__H2O(l) + __H^+(aq)+ OH^-(aq)+ __ CR2O7^2-(aq) + __ Cl^-(aq)--->
1. 1 answer
2. 442 views
What is the shift along x of the following trig functions?y = (3sinx/2) + 4 y = -2sin(x)-4 y = sin(-3x + 3)
1. 0 answers
2. 443 views
Enter the oxidation number with the sign above each elementH2 OH^- Mg^2+ CO3^2-
1. 3 answers
2. 441 views
What is the pH of a 1.24 mol/L solution of HCN(aq) if its Ka = 6.2 x 10-10?Rate my answer please For your understanding: HCN ⇌
1. 2 answers
2. 2,767 views
I am doing a similar assignment as Anaa please help!y = 3cos(x-1) Amplitude: Period: Two x - intercepts: y-intercept: Domain:
1. 0 answers
2. 411 views
What is the percent ionization of a 1.38 mol/L weak acid if its Ka = 2.7 x 10^-6?Thanks again!
1. 1 answer
2. 1,243 views
Find the temperature at which the reaction below is spontaneous given this data:Hf^o of NH3(g) = - 46 kJ/mol, S^o of NH3(g) =
1. 1 answer
2. 1,113 views