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24.5g of CH3CH2CH2Br was reacted with ammonia to form CH3CH2CH2NH2 at a 75.0% yield, calculate the mass of the product formed.

The first step is to calculate the moles of the reactant CH 3 CH 2 CH 2 Br. To do this you need the formula:moles = m/Mr where m is the mass in grams and Mr is the molar mass which can be worked out using th...
MC
Answered by Matthew C. • Chemistry tutor
6448 Views

In Aeneid VII.10-24, how does Virgil make his description of Circe's land menacing?

Throughout this passage, a foreboding and menacing atmosphere is masterfully evoked by Virgil. From the very first sentence of this passage we are on tenterhooks, with the delaying of the verb 'raduntur' unt...
AV
Answered by Alexander V. • Latin tutor
3143 Views

What are the assumptions of perfect competition?

Large number of firms and consumersEach firm is a price-taker and hence has no price setting powerThe price is determined in the market by supply and demandProducts are homogenous and are therefore perfect s...
EB
Answered by Emily B. • Economics tutor
2189 Views

Explain how eutrophication can result in low oxygen levels in the water in the stream.

Eutrophication occurs when excess nitrates from fertilisers seep into the stream. The nitrates cause algal bloom on the surface of the water. As a result, sunlight is blocked from reaching the plants underwa...
NB
Answered by Nadia B. • Biology tutor
4693 Views

How many roots does the equation x^2 = x + 12 have and what are they?

x 2 -x -12 = 0. Here we have rearranged the equation so that we have 0 on one side of the equation, allowing us to now factorise. (x - 4)(x+3) = 0. By looking at the equation we can see that the number 12 ha...
JE
Answered by Juzer E. • Maths tutor
4426 Views