KB

The first three equations I have solved, I would just appreciate someone checking them over to make sure I'm doing them right. Find the GCF: 16x^2z ,40xz^2 , 72z^3 = 3^3z Factor our GCF: a(a+1) - 3(a+1) = a+1 Factor Polynomial: 9a^2 - 64b^2 = (3a+8b)(3a-8...

A mixture of carbon and sulphur has a mass of 9.0 g. Complete combustion with excess oxygen gives 22.6 g of a mixture of carbon dioxide and sulphur dioxide. Find the mass of sulphur in the original mixture

. The source of the Supreme Court’s authority is (Points : 1) moral suasion. judicial activism. concurring opinion. dissent.

Calculate the pH for each of the following points in the titration of 50.0 mL of a 2.7 M H3PO3(aq) with 2.7 M KOH(aq). pKa1 = 1.3 and pKa2 = 6.7 a) before addition of any KOH b) after addition of 25.0 mL of KOH c) after addition of 50.0 mL of KOH d) after...

When a water gun is fired while being held horizontally at a height of 1.14 m above ground level, the water travels a horizontal distance of 4.50 m. A child, holding the same gun in a horizontal position, slides down a 34.0◦ incline at a con- stant speed o...

How many joules of energy would be liberated by condensing 49.6 mol of steam at 100.0 °C and allowing the liquid to cool to 30.0 °C?

a recipe calls for 2 1/2 quarts of fish stock and 1 1/2 pounds of shrimp. what is the unit rate of fish stock to shrimp in the gumbo

Identify the correct sentence. A. In my top drawer is a birthday card from my grandmother and a gold watch from my mother. B. In my top drawer are a birthday card from my grandmother and gold watch from my mother. C. In my top drawer are a birthday card f...

__________ Destiny or Caroline sent an RSVP to the invitation? We __________ everyone __________ it to Jake's party. A. Has; hope; make B. Have; hopes; make C. Have; hope; makes D. Has; hope; makes I say C

What is the longest wavelength of electromagnetic radiation capable of ionizing this hydrogen atom in an excited state? Report your answer in nanometers. Δ𝐸=−2.178×10−18 J(1𝑛2final−1𝑛2initial)

Chris Cheggies

If you heated a hydrate too quickly and some of it splattered out of the beaker how would it affect the calclated percent by mass of water and the molecular formula

I'm not sure how to set up the equations using the volumes, and I'm not even sure what givens I'm supposed to use.

But what's Kw? and the value for NH3? Is that just x? So should it be Kw/5.0x10-4 =(x)(x)/(0.1-x)

I'm really confused. I've never done a problem like this before. Could you plug in the values for me? It just doesn't make any sense and my teacher won't explain it to me when I ask about it.

Thanks!

Ok, that's what I did before. so 2E-11 = x^2/(0.1-x) so x^2 = 2E-12 - 2E-11x But what I don't understand then is how do we solve for x? I used the quadratic equation but when I plugged in those values it gives me 0. So where am I going wrong?

Oh... I see where I went wrong. thanks!

bob is correct, except that you have to subtract the Force*sin(31). It's a poorly worded problem, to say the least.

I need help on all the questions