Hellen

This page lists questions and answers that were posted by visitors named Hellen.

Questions

The following questions were asked by visitors named Hellen.

31m^2n/41 x 21/mn x 2n^2/3m
16 years ago
Which reagents reagents to choose? The transformation shown below can be accomplished in TWO reaction steps. From the following list, select the two reagents (or sets of reagents) which would most effectively bring about this conversion. Reagents: 1. Conc...
16 years ago
The transformation shown below can be accomplished in TWO reaction steps. From the following list, select the two reagents (or sets of reagents) which would most effectively bring about this conversion. Reagents: 1. Conc H2SO4/heat 2. CN- 3. KMnO4 4. (i)...
16 years ago
The products for the following: CaCl2(aq) + K2CO3(aq) ¨ A. CaCO3(s) + 2KCl(aq) B. CaCO3(aq) + 2KCl(s) C. none of these D. no reaction
14 years ago
a 4 kilogram ball moving at 8 meters per second to the right collides with a 1 kilogram ball at rest. After the collision, the 4 kilogram ball moves at 4.8 meters per second to the right. What is the velocity of the 1 kilogram ball?
13 years ago
Two resistors of 15ohms and 5ohms are connected in parallel.this parallel combination is connected in a series with a third resistor of 10ohms.the whole circuit is then connected across a 40 volts supply. 1.determine the resistance of the circuit. 2.the c...
12 years ago
Rseries=R1+R2 =15ohms+10ohms =25ohms
12 years ago
Aluminium react with oxygen to form aluminium oxide.how many grams of potassium chlorate V would be heated to produce enough oxygen to form 5.1grams of aluminium oxide
12 years ago
What should you say when you meet an angel
10 years ago
Am a grade 10 learner n would like to know if i'll be able to become a social worker with the following subjects maths literacy , tourism , history and geography
10 years ago
A satellite orbits the moon at height of 2000m.assuming it to gravitational pull of the moon,find the speed and time it takes for one orbit,given that mass of moon is 7.34 * 10 to power 22 kg and radius is 1.738 * 10 to power 6m.(g = 6.6 * 10 to power -11...
9 years ago
the algebraic expression If m is 8 years older than s
4 years ago
You have 75.0 mL of a 2.50 M solution of Na_2CrO_4. You also have 125 mL of a 1.52 M solution of AgNO_3(aq). Calculate the concentration of CrO_4^2- after the two solutions are mixed together.
4 years ago
An arc subtends an angle of 105°at the center of a circle of radius 6cm. Find the length of the arc (2). Length of the chord subtended at such angle (3). Perimeter of such sector and segment (4). Area of such sector and segment
3 years ago

Answers

The following answers were posted by visitors named Hellen.