Higher concentration means more mass of solute in the solution. And since solutes overall add negligible increase in volume to the solution, density increases. So, higher concentration => higher density;
Give The Empirical Formula Of The Following Compound If A Sample Contains 57.8 Percent C, 3.6 Percent H, And 38.6 Percent O By Mass?
1) If we had 100g of this substance, find the number of moles for each element -dividing 57.8g/12.01g/mol gives 4.81mol C, doing the same gives 1.35mol H (1.008g/mol) and 2.41mol O (16.00g/mol) 2) We can see that 4.81 is twice 2.41 so if we set the ratios of the elements to 2.41, diving through by … Read more
No. That's what school is for. Internet dating is bs. How are you going to make a relationship with someone if you can't even get the courage to talk face to face? I know it's scary (I never dated in high school even though I had many chances) but just push yourself. What's the worst … Read more
One note on Strange's answer: Not all polyunsaturated fats are equally "good". Current research has tended to suggest that an equal 1:1 balance between omega-3 polyunsaturated fatty acids and omega-6 ones are important to heart health and weight management. Corn oil is especially high in omega-6 relative to it's omega-3 content (almost none). In addition, … Read more
The Germanic languages (Danish, German, English for example). English was an adaptation of the Norse language spoken by the invading Vikings. Also, Vikings got much of their food from milk, so they probably taught milk production some. Other than that, the Viking Norse, by raping so many of the Europeans they came across, diversified the … Read more
I would say that the Renaissance Era broke the static concentration of wealth which was in the hands of the Church and landowning nobility during the Medieval times. The Renaissance saw an increased activity of merchants and also nobles who invested their money in art and trade. The availability of money and demand for trade … Read more
Swelling is a sign of either tissue damage or accumulation of water in the tissue. If the swelling is without pain, it could be water swelling, or fluid retention, called peripheral edema. This can be caused by hypertension (high blood pressure), alcoholism, pregnancy, or altitude sickness. Treating the swelling would consist of going to a … Read more
There are more than a dozen species under the name "angel shark" (genus squatina meaning shark-like). The first angel shark to be classified, squatina squatina, lived in all the coastal waters around Europe, including the North Sea and the Mediterranean sea, but it is now reduced to African part of the Mediterranean. Other species Angel … Read more
Advantages: Many. Healthy oils (omega-3 polyunsaturated oils). These oils are very important for heart health and brain health. Besides this fish are high in protein and vitamins while containing no saturated fat (unhealthy oil). Disadvantages: Mercury contamination from polluted water in certain fisheries. Salmon fisheries have been discussed in the news as having this problem, … Read more
Complete ionic shows all of the ions even if they weren't changed in the reaction. Net only shows the ions that changed (precipitate, usually). Eg. NaCl(aq) + Ag2+(aq) complete: 2Na+(aq) + 2Cl-(aq) + Ag2+(aq) --> 2Na+(aq) + AgCl2(s) net: 2Cl-(aq) + Ag2+(aq) --> AgCl2(s)
I don't think so. A platypus lays eggs which means it probably doesn't nurse the young. But then again, remember Ben Still from Meet the Parents, "You can milk anything with nipples."
A mole is 6.023x10^23 of anything. So one mole of copper has 6.023x10^23 copper atoms. The only trick to these kinds of questions is when a question asks for the number of atoms in a mole of a compound containing that atom. So if we were talking about a mole of copper arsenate which is … Read more
If it has a third energy level then you know to look on the third row (period) of the periodic table. Since it has only 1 electron in that level you know to look in the first column (group) of the periodic table. Row plus column meets at sodium. To check our answer, sodium has … Read more
Google for "solubility rules" Basically, when you have these kinds of reactions you have a solution of ions (Ba 2+ and OH -) added to another solution of ions (H+ and SO4 2-). In a way, you could say the default thing is that nothing happens when you mix the two solutions (you just get … Read more