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kabelo
Questions and answers by
kabelo
Questions (73)
a copper wire has a diameter of 1.02mm,the wire carries a constant current of 1.67A,the density of the free electrons is
4 answers
3,827 views
a weak acid has a pKa of 6.0. what is the ratio of conjugate acid to conjugate base at pH 5?
3 answers
1,397 views
if the stress strai graph is a straight line,how much does the bar srtetch when applied force is increased by 50000N?
1 answer
360 views
if the stress strai graph is a straight line,how much does the bar srtetch when applied force is increased by 50000N?
1 answer
355 views
if 23.74ml of 0.01470M NaOH are required to completely neutralize 25.00ml of gastric juice,calculate the concentration of the
4 answers
741 views
what is the function of an indicator in a titration
1 answer
437 views
a 0.1M NaOH solution has been prepared for you.Describe how you would prepare 1 litre of the same solution
5 answers
656 views
please help with heat calculations that include the melting of ice
1 answer
367 views
the following names are incorrect,draw their structures and supply the correct name.(a)2-isopropylpentane
3 answers
649 views
help with thes -iso and cyclo when doing the nomanclatur of organic compounds
1 answer
372 views
please help with a website that talks about the misconsumption of electricity and their corrections
1 answer
460 views
assuming that 1g of aspirin dissolves in 450ml of water at 10°C,how much aspirin would be lost in the 5ml of water added to the
5 answers
1,310 views
assuming that 1g of aspirin dissolves in 450ml of water at 10°C,how much aspirin would be lost in the 5ml of water added to the
6 answers
1,147 views
two llong parallel vertical wires 0.3m apart are placed east-west of one another.The current in the eastely one is 30A and that
2 answers
517 views
help with the websites that discuss the mechanism followed during the manufacturing of a bar magnet such that it has a north and
1 answer
368 views
a large number of hydrogen atoms have electrons excited to the n_h=4 state.How many possible spectral lines can appear in the
3 answers
1,080 views
what dominant colour appears for(a)the mecury street bulb (b)the sodium street lamp and (c) an incandescent bulb?
5 answers
4,124 views
the major commercial aluminium ore is bauxite,AlO3.H2O(s).What is its molar mass?The analysis of a representive sample of
4 answers
1,216 views
write equations for the reactions of NaOH(aq) with solutions containing Al^3+ Cu^2+(aq),Pb^2+(aq) and Fe^3+(aq) ions
3 answers
520 views
what subshells would be found in the shells with n=3 and n=4?how many orbitals are there in a g subshell?
2 answers
659 views
1) A 3-fold degenrate subshell can carry a maximum number of how many electrons?
2 answers
694 views
consider a simple harmonic oscillation with m=0.5kg, k=10N/m and amplitude A=3cm.WHat is the total energy of the
4 answers
1,117 views
why is the 5th ionisation energy(IE) of carbon so much larger than its 4th?
4 answers
2,366 views
why is the ionisation energy of oxgen less than that of nitrogen even if oxygen is to the right hand side of nitrogen?
3 answers
393 views
for an oxygen atom,wich requires more energy,tha addition of two electron or the removal of one electron?explain why
4 answers
593 views
for an oxygen atom,wich requeres more energy,the addition of two electrons or the removal of one electron?explain why
4 answers
610 views
a pendulum of length L=9.8m hangs in equilibrium and is given velocoity v=0.2m/s at its lowest point.What is the magnitude of
1 answer
351 views
what is the minimum number of electrons that would be expected to be in the valence shell of As in AsCl
3 answers
1,657 views
a pendulum of length L=9.8m hangs in equilibrium and is then given velocity v=0.2m/s at its lowest point.What is the magnitude
1 answer
371 views
two notes wich have frequency ratio 2:1 are said to be separated by an octave.A frequency wich is separated by an octave from
2 answers
1,202 views
What happens when the frequency of a force applied to a system matches the natural frequency of vibration of the system
2 answers
562 views
consider a simple harmonic oscillation with m=0.5kg,k=10N/m and amplitude A=3cm,if the oscillation is released from rest at x=A
1 answer
531 views
(a)explain why the colour for ions in the flame tests differ (b)Why do the chemicals have to be heated in the flame first before
4 answers
1,958 views
what is the characteristic flame for sodium,lithium,barium,copper and calcium?explain why
3 answers
754 views
find the ratio of the intensities of two sounds if one is 8 dB louder than the other
5 answers
4,236 views
two cars are heading at each other with the same speed v. The horn of one (f=3000Hz) is blowing,and is heard to have a frequency
2 answers
558 views
explain why you get two different pH values for same solution when calculating and using pH meter of same solution?
1 answer
320 views
these is 0.1M HCl of 100ml of that solution in a beaker,calculate pH?
3 answers
502 views
calculate pH of 0.1M NH4^- of 100ml of that solution?
1 answer
356 views
calculate pH of 0.1M CH3COOH of 100ml of that solution?
5 answers
446 views
what is the [CH3COO^-]/[CH3COOH] ration in an acetate buffer (Ka=1.76 x 10^-5) at pH 3.8? show calculations
3 answers
1,077 views
Phosphoric acid is a triprotic acid with pKa's of 2.14, 6.86, and 12.4.The ionic form that predominates at pH 3.2 is?choose the
3 answers
2,230 views
If a solution were made by mixing equal volume of 0.1M acetic acid(HA) and 0.1M Na-acetate(A^-) what pH would it gives?
2 answers
536 views
describe an alternative method to prepare a 0.2M potassium phosphate buffer using KH2PO4 and KOH
2 answers
714 views
for each of these qualitative test,barfoed test,benedict test,seliwanoff test,bial test,molisch test,and iodine test, describe
2 answers
1,024 views
please help with a link to scientific articles about metabolic demands of excercise in cardiovascular system
1 answer
382 views
Identify one evironmental or human factor that causes ill health, accidents and disasters in south africa?
*in 10-15 lines
11 answers
819 views
A 250 cc motorbike must accelerate from rest to 126 km/h in 150 m in 10 seconds. Draw a velocity/time graph of the movement.
1 answer
374 views
If a person has a mass of 83 kg, what will that person weigh in newton
3 answers
651 views
3 environmental health hazard that cause ill health, crises, and or disasters within your community or any other community
4 answers
1,004 views
identify two contenporary social issues in your community
7 answers
845 views
Explain clearly how intrapersonal conflict can be addressed through engaging in physical exercises,counsellingand self talk
5 answers
1,678 views
What are careers of general geography?
9 answers
536 views
Traditional African marriage is an advantage to men only not women
3 answers
576 views
3human right violation or discrimination and explain in an introductory paragraph why you choose the specific human right
2 answers
491 views
How did the fraud and corruption affected the offender' career?
3 answers
495 views
a client invests 100 000 with an interest rate of 8% with quarterly compound what will the interest be after a year
3 answers
413 views
describe any six risky situations youth are frequently exposed to.
17 answers
11,054 views
Method for the estimation of potassium in potassium trioxalatoaluminate(III).
1 answer
396 views
give a description of recent (2018-20)example of how this problem has displayed itseif in your community?
1 answer
244 views
impact of riskon physical teenage behavior
2 answers
223 views
how bloom's taxonomy can guide the design of assessment
2 answers
96 views
reasons for assessing
2 answers
81 views
benefits of assessment for both learners and teachers.
2 answers
125 views
the importance and benefits of understanding learning styles and strategies in promoting inclusivity and providing
2 answers
94 views
learning styles
2 answers
100 views
explain how teachers can promote inclusivity by being knowledgeable about different learning styles and strategies
2 answers
88 views
. Elaborate on how teachers can identify and accommodate various learning styles to ensure that all learners can engage and
2 answers
105 views
highlight the significance of learning strategies, which are specific techniques or approaches used to enhance learning.
2 answers
88 views
discuss different types of learning strategies and how they can be employed to meet the diverse needs of learners
2 answers
90 views
highlight the significance of learning strategies, which are specific techniques or approaches used to enhance learning.
2 answers
87 views
significance of learning strategies
2 answers
82 views
discuss different types of learning strategies and how they can be employed to meet the diverse needs of learners.
2 answers
97 views
