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In terms of electrons, what happens when a calcium atom reacts with chlorine atoms to form calcium chloride?

Calcium chloride in an ionic compound. The calcium atom loses two electrons, and each chlorine atom gains one electron, to form a full outer shell of electrons. The electrostatic force of attraction betwe...

Answered by Yusuf S. • Chemistry tutor

28977 Views

Devise a simple synthetic route to an amide from a carboxylic acid. Give a mechanism for the final step and explain why the reagents are not added 1:1 in the final step

1st step: SOCl₂ or PCl₃ to form an acyl chloride, which is now significanlty more electrophilic based on leaving gorup abiliity, hence an amine can now attack the acyl chloride to fo...

Answered by Elliot B. • Chemistry tutor

2323 Views

A transmitter from a researcher's boat sends a signal to the seabed of waves speed 300m/s and it takes 5 seconds for the signal to return back to the boat. Calculate the depth of the sea there.

distance=speed*time

distance=300*5

=1500

1500/2 (as signal travels back and forth)=750m

Answered by Tani A. • Physics tutor

1893 Views

The supply function for the production of good A is P=50+45Q. The demand function is P= 100-5Q. Find the equilibrium price and quantity.

At P_Qe supply equals demand sowe set equations equal to each other and solve as symoltaneous equations: 50+45Q=100-5Q

then 50Q=50

so Q_e=1.

By ...

Answered by Peter K. • Economics tutor

2083 Views

Find two values of k, such that the line y = kx + 2 is tangent to the curve y = x^2 + 4x + 3

There will be intersection when x^2 + 4x + 3 = kx + 2. Our goal is to find the values of k which would only give one solution to this quadratic equation, which would make the lines 'tangent' to each other...

Answered by Andrew N. • Maths tutor

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