Recent content by protractor

Wait I think the answer could be 1/9. It could be possible that Jane and Bill may not be carriers. There is only 2/3 chance for each to be a carrier. If both are carriers, then there is a 1/4 chance Jane and Bill's child could have cystic fibrosis. Multiplying, 2/3 X 2/3 X 1/4 = 1/9

I think both Jane and Bill are carriers. I'm unsure if the answer is 1/4 (25%).

n is the principal quantum number. l is the angular momentum quantum number. ml is the magnetic quantum number. The possible values of l are 2, 3, and 4. I'm not sure if l can be equal to 4. On the answer key, it shows l = 2, 3.

.34 is in M instead of atm (I forgot to cancel out the atm).

Homework Statement What is the solubility of an unknown gas in water at 1.0 atm if its solubility at 3.0 atm is 1.02M? Homework Equations Henry's law Sg = k*Pg The Attempt at a Solution Sg = 1.02M/3.0atm * 1.0 atm = .34 atm I'm not sure if Pg, the partial pressure of the gas, is 1.0 atm or...

Homework Statement Do metal atoms, such as Ti and Na, have London-dispersion force?2. The attempt at a solution In the textbook by Tro (6th ed), "Since all atoms and molecules have electrons, they all have dispersion forces." But metal atoms are held together by electrostatic forces. I think...

They don't have intermolecular forces. One more question: do metallic atoms have dispersion forces? In the textbook by Tro, "Since all atoms and molecules have electrons, they all have dispersion forces."

Homework Statement Is Xe a molecular, metallic, ionic, or network covalent solid? 2. The attempt at a solution Xe is not molecular (single atom) Xe is not metallic or ionic. Xe is not not network covalent (xenon atoms have a stable electron configuration and don't form covalent bonds with each...

Homework Statement Do ionic compounds such as NaCl and K2O have intermolecular forces? 2. The attempt at a solution I got stuck conceptually. NaCl and K2O are ionic compounds. Their basic unit is formula units. They are not molecular compounds. Ionic compounds are held together by...

Homework Statement Calculate the amount of heat emitted when 12.4 g of water freezes to solid air. Homework Equations heat of fusion = 6.02 KJ 1 mol H2O = 18.02 g H2O The Attempt at a Solution 12.4 g H2O x 1 mol H2O/ 18.02 g H2O x (-6.02 KJ) / 1 mol H2O = - 4.14 kJ I am unsure whether the...

Homework Statement What volume in milliliters of .500 M HNO3 is required to neutralize 40.00 milliliters of a 0.200 M NaOH solution? Homework Equations The balanced chemical equation HNO3(aq) + NaOH(aq) → H2O(l) + NaNO3(aq) The Attempt at a Solution .200 mol NaOH/1L x 0.04000 L x 1 mol HNO3/...

Should I take the algebra/trig based physics first before taking the calculus-based physics? I never took physics before. However, I finished the community college's math sequence (up to Ordinary Differential Equations). On the class description it states that it is recommended to take the trig...

Homework Statement Two different scientists measured the speed of light four times. Scientist A 3.80*108m/s 3.32*108m/s 3.10*108m/s 3.05*108m/s Average 3.32*108m/s Scientist B 2.90*108m/s 3.10*108m/s 3.24*108m/s 2.95*108m/s Average...

Thank you! I got it.

Ok 32 and 1.8 are exact numbers. So when I first multiply and then add will it become 143.6°F or 144°F? I thought it might be 143.6 because, even though the numbers are exact, the final step is adding (basing on decimal places). Or is it based on initial significant figures with the temperature...