Q: " Smoking one cigarette will reintroduce nicotine into your system and may lead to smoking another, and then another and then another. You will be better off if you just don't smoke at all. When you find yourself about to give in to the common rationalization that just one cigarette isn't going to hurt, turn back to your reason for quitting. Are you quitting for your child? Smoking just one cigarette will hurt her. Your own health? One cigarette is going to set you back. Just one cigarette could make you wind up going back to your pack a day habit, and then you'll have to start all over. Don't throw away everything you've accomplished so far. If you do give in? Don't beat yourself up, but don't use it as an excuse to indulge further. You'll probably have worse cravings than before, but you have the strength to overcome them. You quit once, and you can do it again. Having a positive attitude is very important when you're quitting cigarettes. Your mind may constantly pull you down with negative thoughts about everything you're giving up, like having a good time with your friends or feeling the sweet rush of smoke after a long day. Focus not on what you're losing, but what you're gaining and have already gained. For example: Your health Your family's respect Money Whiter teeth and fresher breath A cleaner space Clothes that don't smell Time to spend on anything you want to do besides smoking Freedom from the incessant need to drop whatever you're doing and have a smoke During the times when quitting feels impossible, and you just don't think you can handle going without cigarettes anymore, go back to your calendar. Look at the date you quit. Every day you successfully avoided smoking since then is an accomplishment. You obviously have amazing willpower. You have physical strength. You've put your mind and body to the test in a way that no one who hasn't done it could ever understand. Take pride in what you've done, and stay motivated to keep going.
A: Don't give in to "just one cigarette. Focus on what you're gaining instead of what you're losing. Keep believing you can do it.

Q: The density of a substance is equal to its mass divided by its volume. You can measure the mass on a scale and record the volume of the liquid used. Use the equation "m / v = D" where m is mass in grams or kilograms, v is volume in milliliters or liters, and D is density. For example, if you had a sample that was 8 grams and 9 milliliters, your equation would be: "8.00 g / 9.00 mL = 0.89 g/mL." Weigh an empty container first and record its weight. Next, fill your container with the desired liquid and weigh it again. The mass of your liquid is equal to the second measurement minus the first. For instance, if the filled container weighed 2.00 lbs and the empty container weighed 0.75 lbs, the equation would be: "2.00 - 0.75 = 1.25" and the liquid would weigh 1.25 lbs. Between -10 degrees Celsius and +30 degrees Celsius, the density of water can be rounded to 1.00 (assuming 3 significant figures). If you are using liquids that do not fall in that temperature range, you can measure the mass and the volume of your water and calculate the density. Alternatively, you can often find charts with the density of water at different temperatures. It's important to find the density of water that is the same temperature as the liquid in order to get accurate measurements. Substances expand when they are heated and contract when they are cooled. Since density is a measure of how much mass is in a given volume, the measurement is changed by the expansion and contraction due to temperature. If you want to get accurate specific gravity calculations, it is necessary that the liquid you are measuring and the water that you are using as a comparison are both at the same temperature. The units will cancel out in this equation, leaving you with a unitless quantity. That number is the specific gravity (or relative density) of your liquid. The ratio used will be "Dl / Dwater" where Dl is the density of your liquid and Dwater is the density of your water. For example, if you were to take the density of acetone (0.787 g/mL @ 25 degrees C) and divide it by the density of water (1.00 g/mL @ 25 degrees C), you would get 0.787g/mL/1.00g/mL=0.787{\displaystyle 0.787g/mL/1.00g/mL=0.787}.
A:
Obtain the density for the liquid in question. Obtain the density of an identical volume of water. Keep your liquids the same temperature. Calculate the ratio of the liquid's density to the density of water.