Idont understand! barium sulfate, baso4, is made by the following reaction.
ba(no3)2(aq) + na2so4(aq) + baso4(s) + 2nano3(aq)
what is the theoretical yield of barium sulfate, expressed in grams, if 75.00 g of ba(no3)2 were used?
after collecting and drying the product, 64.45 g of baso4 were obtained. what was the percentage yield?

What is the empirical formula of vanadium 1 oxide given that 20.38 grams of vandium combines with oxygen to form 23.58 grams of the oxide

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?