A watershed, or drainage basin, is a region of land where rain or snow drains downhill into a body of water, such as a river, lake, sea, ocean or wetland. The water in drainage basins is most likely used
When the following equation is balanced, the coefficient in front of HCl is: Ba(s) + HCl(aq)→BaCl2(aq) + H2(g) Question 4 options: 6 1 3 2
Quartzite and marble can look very similar. Why do you think artists carve sculptures out of marble more often then quartzite?
The report clearly executes an experiment to see if pH affects the rate of a reaction and correctly explains the collection of the balloon’s circumference. The tool list is accurate, including a tape measure, and the conclusion accurately confirms the hypothesis with well labeled data tables. The literature review of two sources is unclear without […]
Niobium is an element whose density is 8.55 g/cm3 and atomic weight is 93. It crystallizes in body-body-centered structure. With this information, calculate the atomic radius of niobium atom. The question requires that the Edge of length of cell a, be calculated. We know that the density of the element is given as p = 8.55 g […]
how can one convert 4.95×1022 atoms of zinc into grams? Many students experience difficulties in converting the atoms into grams. It is possible to convert the number of atoms into grams. This tutorial gives an answer and insight on how to convert the above zinc atoms into grams. Many students experience difficulties in converting the atoms […]
A 30.62 gram sample of chromium is heated in the presence of excess oxygen. a metal oxide is formed with a mass of 44.75 g. determine the empirical formula of the metal oxide.
An alpha particle (which is a helium nucleus, q=+2e, m=6.64×10−27kg) is emitted in a radioactive decay with ke = 5.63 mev .
It is required to make 14 grams of certain chemical compound called z. this is made from compounds w, x, and y in the ratio of 2:1:3. the compound y is itself made from w and x. to make 6 grams of y requires 4 grams of w and 2 grams of x. how much […]
What mass of calcium can be produced by this process if a current of 6700 a is applied for 39 h ? assume that the electrolytic cell is 73 % efficient.what is the minimum voltage needed to cause the electrolysis?
