Gift

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

Questions

The following questions were asked by visitors named Gift.

State whether each of the following will increase,decrease or unchange when catalyst is added to the reaction and give an explanation for your answer please a) rate of reaction b)activation energy c)reaction enthalpy d)equilibrium of reaction

Use the bond enthalpies and bond energies in the data book in themochemical equations to calculate the reaction enthalpy of: H2(g) +Br2(g) -> 2HBr(g)

When water falls from the top of the waterfall,at the victoria falls in zimbabwe,the temperature of the water at the top is less than the temperature at the bottom.If 180.5g of water falls a distance of 125.0m, calculate the increase in temperature of the...

a)Hydrogen has a much higher specific heat capacity than milk. What can you say about the specific heat capacity of hydrogen?b)wrap a cotton wool around a thermometer,will its temperature rise?Explain your answer c)if you are holding a metal nail with one...

A piece of metal has a density of 0.20g/cm^3.what is the volume in cm^3 of a 1g sample of a substance?

Wrap a cotton wool around a thermometre,will its temperature rise? Explain your answer please

What is the boiling and freezing points of celsius scale and kelvin

Using the form of energy diagram,make a concept map of the two different methods of calculation of reaction enthalpy(via the bond enthalpy and via the enthalpy of formation)

Calculate using the enthaly of formation,the enthalpy of combustion of methanol,CH3OH

Define the terms 'weak acid' and 'catenation'

1)Define the term'geometric isomers' 2)Give geometric isomers and corresponding names for the following condensed structural formula: CH3CH2(CH)2CH3

Write down (a) condensed and (b) skeletal structural formulas for isomers of an organic substance whose chemical formula has 5 carbon atoms and 12 hydrogen atoms and (c) provide the common name for each of the isomers

Malaan is travelling from Makhado to Polokwane by taxi at a speed of 120km/h.A Nissan bakkie passes the taxi while it is on its way to Polokwane and is moving at 150km/h. a) Determine Malaan's velocity with respect to the Nissan bakkie b) what is the taxi...

The time required by workers to complete an assembly job has a mean of 50 minutes and a standard deviation of 8 minutes. To spot check the workers' progress on a particular day, their supervisor intends to record the times 60 workers take to complete one...

Pb3(ASO4)2.the solubility product expression

Two force,3N and 4N act on a body in the direction due north and east respectively. Calculate their equilibrium?

A constant force of 40newton is applied tangentally to the rim of the wheel with 20cetimetre radius the wheel hs moment of intial 30kg find (a)angular acceleration (b)angular speed after 4second frm rest (c)d number of revolution made in(d)show that d wor...

Two chords in a circle are equal in lengh.The distances from the centre of the circle can be represented by x2 and 4x respectively.How far is it chord from the centre of the circle?[Under the topic of properties of a circle.]

M varies directly as n andinversely as the square of p. Given that m=3 when n=2 and p=1, write down an equation connecting gmnp

A 10uf capacitor is charged from a 30v supply and then connected across an uncharged 50uf capacitor.Calculate a. The final potential difference across the combination b. The final and initial energies

A bank charges 2 1/2% commission for issuing a bank draft. If a customer obtained a bank draft for #84,000 from the bank, calculate the total cost of the bank draft

The reproductive system of a male mammal is made up of... A. Claspers, prostrate gland, sperm duct and vas deference. B. Festis, prostrate gland, sperm duct and vas deferens. C. Oviduct, urethra, testis, and sperm duct. D. Testis, uterus, prostrate gland...

What a....! The more you look, the less you see. A. Wonder B. Miracle C. Challenges D. Paradox

The name given to program that is stored in the system or in a diskette is known as... A. Index B. Icon C. File name D. None of the above

Which of the practices will lead to losses in electrical power transmission? A. Using transmission cables of large diameter B. Transmitting at high voltage and low current C. Transmitting at relatively low voltage and high current D. Using a step-up trans...

Which of the following substances does not conduct electricity? A. Graphite B. Glass C. Sulphuric acid D. Table salt solution

What are the two electronic structural conditions for the stability of an atom?

What is the formular of kenetic energy

4 friends have 5 chocolates and they want to share equally.

Calculate the linear expansivity of brass length 120m that assume two new length of 120.06m when heated through a temperature of 100 degree celcius

The angle of elevation on the top of radio mask from a point due east of it and 96m away from the base is 30degree from another point due west of a mask the angle of elevation of a top of the mask is 60degree calculate the distance of the second point fro...

A girls walks 12m northwards 5m eastwards and 7m southwards her total displacement is?

What is the balanced equation for the reaction between dilute tetraoxosulphate (vi) acid and sodium hydroxide solution

Evaluate and discuss the negative impact on your self and other

How to calculate the perimeter of the triangle given your answer to correct to the nearest metre

determine the value of x and y for the sequence : 3;x;11;21;y

A student eat a dinner containing 8.0 * 10 of energy. He wishes to do an equivalent amount of work in a nearby gym by lifting a 6 kg object how much time must he raised the objects to expand this much energy? Assume that arises is a distance of 2.0 m each...

How do i make x the subject formular in this equation a(x+b)=c

A car five marked 15A and operates normally on a 12v battery calculate the resistors of the fuse wire

2logₐx- 3logₐ2x + 2logₐx²

If the sum of a number is 3 times the other number given is 21, the product of two numbers is 30 find the number

Ludo walks so that she ends up being 40km and 25km east of her starting point.What is the bearing on which she has walked?

The diagram below shows a rectangle with dimensions in cm 3x+7y 3x+4y-4 8x+4y+2 7x+ y

Answers

The following answers were posted by visitors named Gift.

Hydrogen has a much higher specific heat capacity than milk.what can you say about the specific heat capacity of hydrogen?

Heat is moving inward

In 10-15 line critically discuss 5 ways in which the environment problem impect on the community

Thanx a lot GOD BLESS YOU

Can someone help plz

Why do some criminals use facebook as a tool to achieve their goal

200gX12.5cm=12.5cmXp. p=200g

Because i want too know best

Please answer the above question

File name.. But not that sure

C. Challenges but I want to be more sure

That's how the spellings are on d question paper they gave us. D only mistake I made was the one I wrote 'vas deference instead of vas deferens' other ones are the same on my question paper. Thanks

So according to your explanation, transmitting at high voltage and low current will lead to losses in electrical power transmission right? Which is option B. Though am not a science student rather Art but the question appeared on my hnd aptitude test, so...

How can sports detract nation building

please answer my question

Moral defficiency

I need the answer for one of the papers

Hw didi get ur M and Mx

I don`t understand make it more simple

Tell me the answer

To check answers

I am a schooL kid who need help in life orientation

48 base 12 × 15 base 12 48 ×15 =1594 base 12 The answer is = 1594 base 12

71428.57 coulomb

Give them answer

400 centimetre cube is is divided by it's minutes That is 100 cm cube / 2 minutes equals to 200 cm cube s -1

How is that 48 gotten

8.5*84=714g 714/1000=0.714g I hope I'm correct

Alternatively Molar mass of NaHCO3 =23+1+12+(16*3)=84g/mol 84*0.17=14.28g If 14.28g produces 1000cm³ Then xg will produce 50cm³ Cross multiply 14.28*50/1000=0.714g Pls cross check

If the scale of map is 2cm to 1km, what is the ground distance if the distance between two town is to 1ocm

I don't understand

V=u+at =0+2×10 =20ms-¹ V1= 20+1×15=35ms-¹ So the total distance traveled Area of OAG =½×10×20=100m Area of trapezium GABF =½(20+30)×15=412.5m Area of FBCE =35×70=2450m Area of triangle ECD =½×20×35=350m Total distance = 100+412.5+2450+350=3312.5m

I want an answer

Please I don't understand anything at all

Length of wire, extension of wire and load used

A plane flies for 150km on a bearing of 030degree and then for 259km on a bearing of 075degrees. How far north has it travelled?

A plane flies for 150km on a bearing of 030degree and then for 259km on a bearing of 075degrees. How far east has it travelled?

A plane flies for 150km on a bearing of 030degree and then for 259km on a bearing of 075degrees. Draw an illustration for the provided information. What is it's bearing from it's starting point?

A tree diagram can also be used to solve this problem.