What is titration in chemistry? How many milliliters of 0.200 M HNO3 are required to exactly neutralize 400 milliliters of 0.600 M Ca(OH)2? a) 2400 mL b) 1200 mL c) 240 mL d) 120 mL How many mL of 37% NaCl do you need to use to make 500 mL of 7% NaCl?
What is a nonelectrolyte? Nonelectrolytes: Chemicals that dissociate in water break into ions that form electrolytes. Electrolytes are classified as strong, weak, or non-electrolytes based on the amount of chemical that dissociates in water. Answer and Explanation: A nonelectrolyte is a chemical...
In the case of hydrogen and oxygen gas, if you react them together one way you get liquid water (H2O). The reason we cannot breathe liquid water is because the oxygen used to make the water is bound to two hydrogen atoms, and we cannot breathe the resulting liquid. The oxygen is usele...
Extremophiles tend to have a different chemistry from other bacteria, a chemistry that in some case is actually more related to plants and animals than to previously known bacteria. 极端微生物和别的细菌结构有差异,它们含有一种某些情况下与动植物联系更加密切的化学物质,这种物质与我们先前知道的细菌的联...
Chemistry is the study of substances; their properties, structure, and the changes they undergo. Micro-macro: the forest or the trees Chemistry, like all the natural sciences, begins with the direct observation of nature— in this case, of matter. But when we look at matter in bulk, we...
OHThe kinetic-energy anisotropies of fifteen diatomic hydrides AH with A = H, Li, Be, B, C, N, O, F, Na, Mg, Al, Si, P, S, Cl are calculated from self-consistent-field wave functions constructed from extended basis sets of Slater-type orbitals. It is found that there is no ...
there are institutions that offer much more than vocational training in their undergraduate programs. Here’s why it’s in your best interests—not business’s best interests, but your best interests—to get a degree involving actual Computer Science, not vocational training:What good is a CS de...
What Is a Chemistry Major? A chemistry major explores the complex ways the elements on the periodic table combine. Those elements can produce table salt, a combination of sodium and chloride, water, a combination of hydrogen and oxygen, and myriad other, more complicated compounds. In classroom...
And then, I have chemistry lab at night this semester. It's two hours every Tuesday and Thursday. Y'know, that building's way across campus. So I just eat something in my dorm before I leave, or skip dinner altogether. I come here afterward, but lab lets out at seven-thirty and ...
10.Which of the following is suggested by the woman to be a good way of learning English? A.Reading newspapers. B.Writing diaries. C.Reading aloud in the morning. 11.Why is it difficult for the man to learn English? A.He doesn’t talk to his English teachers. ...