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Show your workings please.

Show your attempt please.

What do you think is the difference between those two?


Post your attempt please.

The nitrogen atom is the central atom. Does that help?

Yup, that's the way to do it.
Of course, any other variable used is acceptable :)

Show your attempt please.

The probability of getting the first as a carrot is given by:
Number of carrot soup cans / Total number of cans
The probability of getting the second as a carrot is given by:
Number of...


Show your attempt please.

Let the 4 numbers be variables.
For example, let the first number be x.
The second number would be x+d
The next would by x+2d
And the next, x+3d
Their sum is 20...
x + (x+d) + (x+2d) +...

I would prefer if you change the way you attempted it a bit and retry.
Let x be the number of nickels and y be the number of dimes.
The net value of the nickels is 0.05x and the net value of...

To get the current, you need to use the formula:
I = \frac{Q}{t}
Q is the charge flowing. You have 5.7x10^16 doubly positively charged ions, and 6.5x10^16 singly negatively charged ions. Find...

The way the speed was given is a bit weird... but that doesn't change the fact that:
Speed = Distance / Time
Rearranging gives you:
Time = Distance / Speed
This should be easy enough to...

For a function f(x) = \frac{x1}{1+x}, f(a) will be f(a) = \frac{(a)  1}{1+(a)} = \frac{a1}{1+a}
Similarly, f(2a+b^2c) will be f(a) = \frac{(2a+b^2c)  1}{1+(2a+b^2c)} =...


Ah, no, not quite right.
Half life has a special behaviour. Say something has a half life of 10 minutes and there is initially 128 kg of that thing.
After 10 min, there would be 128/2 = 64 kg...


You can find 50 animals/plant you know of and Google their binomial nomenclature. Plus I'm sure you can get a lot of the species for dogs and cats alone what you get you well above 50 examples.

Do you understand how to use the ztable (normal distribution table)? If you don't, then it's near to impossible for you to solve the first question. And without the answer to the first question, the...

Post your attempt please.

What are your thoughts about the answer?

You guessed right! You will have 0.1 g of iodine in water and 0.9 g of it in kerosene.
And you work the same way with the next extraction. Could you try it out?

Is it normal that your title is different than your post content? :confused:

You are being asked for the value of P, not the value of I. But the thing is, you don't have I either.
What you need to find is a sum, P, which when added to an interest I will give $300.
And...

What is the meaning of heterogeneous? If you know this, you should be able to answer this question.


What would make you think they are less or more stable than group 1 compounds?

This is something that all the textbooks I came across mentioned. Take your book, give it a read and attempt an answer of your own.


m1 is the initial molarity.
v1 in the initial volume.
m2 is the final molarity.
v2 is the final volume.
What you need to find in each case is the molarity.
For the first test tube, you have...

To get the y intercept, put x = 0. This is the equation of the yaxis, hence the intercept.
To get the x intercept, put y = 0. This is the equation of the xaxis, hence the intercept.

If you're being given such a question as homework, it means that you should be able to do it and that it's only practice. Review your notes, your books, there should be examples. Apply the same...

This is not a complete question.
And you haven't shown your attempt.

Don't you have the data sheet where there are a lot of redox reactions mentioned and listed according to their EV values?
Anyway, you lack the water molecules here.
MnO_4\ ^ \ +\ 8H^+\ +\ ...

There is not enough information and post your attempt please.

Right, that was a typo from me :o

Your equations aren't what you were supposed to get...
Take the first sentence only:
2x + 3y = $2.90
Taking the second sentence:
x + 2y = $1.80
Can you try this now?

Show your attempt please.

g(4) means the value of the function (what you usually call y, e.g. y = 3x + 1, y is the function) when x = 4.
You have a set of coordinates from which you can find the answer. Simply find 4,...

Post your attempt. Please show all calculations.

I don't quit understand what you were trying to do.
In v = u + at,
v = final velocity,
u = initial velocity,
a = acceleration,
t = time.
From what you tried, you are saying that at t = 10...

