- 10 Supergiants 7104 B 1102 Absolute Magnitude Giants Luminosity + St Main Sequence 1 С +10 10-2 White Darts -15 0 B. 10-4 к M А F G Spectral Class Spectral Class o B А F X M Name blue blue-white white yellow-white yellow crange red А star has a greater temperature than a star. A) blue, red B) red, blue red, yellow D) yellow, blue​

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at