In the qualitative analysis scheme for metal ions, how are the analytical group iii cations separated from the cations of analytical groups iv and v? a. by addition of hcl, forming insoluble metal chlorides b. by addition of h2s in basic solution, forming insoluble metal sulfides or hydroxides c. by addition of h2s in acidic solution, forming insoluble metal sulfides d. by addition of (nh4)2co3 or (nh4)3po4, forming insoluble metal carbonates or phosphates e. by addition of h2so4, forming insoluble metal sulfates

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

Follow the steps provided in the simulation to add water to the graduated cylinder, select one of the three samples (copper, silver, or gold), set its mass to the values given in the statements below, and calculate its density. here is a summary of the steps required: add water by clicking and holding prepare a known volume of water button. until the desired volume of water has been added. if more than the desired volume is added, click the reset button. button and redo the procedure. a single click will add about 21.0 ml of water. to set the mass, click and hold weigh out metal button. until the desired amount of metal is added to the weighing pan. once the desired mass of the metal is added, release the button. transfer the metal to water and then click on calculate density button. to see how the density is calculated using water displacement to measure the volume of the solid. to save time you can approximate the initial volume of water to â±1 ml and the initial mass of the solid to â±1 g. for example, if you are asked to add 23 ml of water, add between 22 ml and 24 ml. which metals in each of the following sets will have equal density? check all that apply.

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)