please help with my chemistry homework

Suppose a boil water notice is sent out advising all residents in the area to boil their water before drinking it or using it for cooking. You need to boil 18.5 L of water using your natural gas... more


If there was water left over in my pycnometer when an unknown liquid was then put into it, what happens to the density of the unknown?

This is a question on my post lab asking me to describe what would happen if there was an error during the experiment. Would the density of the unknown be less dense or more dense and why? I... more


The Race Between Two Friends

Yourry and Timothy are competing against each other in the regional track meet to determine who will move on to the championship of the 100-meter dash. Yourry's distance covered, in meters, after t... more


Which of the following substitution/redox reactions with halogens (F, Cl, Br, I) can take place?

For the following reactions:1. NaI(aq) + Cl2(g)2. NaF(aq) + Cl2(g)3. NaCl(aq) + Br2(aq)4. NaF(aq)+Br2(aq)Which reaction are allowed?


Calculate the wavelengths of the following objects in nm

an 80.0 kg athlete running a "4-minute mile" (i.e. 4.00 min/mile)  Earth (mass = 6.20 × 1027 g) moving through space at 2.80 × 104 m/s


Boiling Point - College CHEM

 You dissolve an unknown into Chloroform and find that its vapor pressure at the boiling point is depressed by 3.85%. If you also know that the mixture has a mass% of unknown to be... more

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