Why do scientists say that most of the mass of an atom is located in the nucleus?

Give the name and molecular formula of a higher homologue of propane.

Which statement correctly describes the charge of the nucleus and the charge of the electron cloud of an atom? (1) The nucleus is positive and the electron cloud is positive. (2) The nucleus is positive and the electron cloud is negative.

Approximately 3.54 kJ were used to heat a pot of potato soup, from 25 degrees * C to 100 degrees * C. If the specific heat of potatoes is 3.67 J/g^ C how many grams of potatoes were cooked?

Some bleaches contain hydrogen peroxide as their active ingredient, while others contain sodium hypochlorite. Both these chemicals contain an element that makes a colored stain colorless.

What similarities do weather and climate have?

Using activated charcoal to separate heavy metals from water is a process known as scrubbing. True or False

If 119.5 g of iron is mixed with 279.50 g of copper (II) nitrate, what is the limiting reagent for the reaction?

Write and balance the double replacement reaction between barium sulfate and titanium (II) oxide.

What do a Am radio, Fm radio, television and cell phones have in common. A.) they were all invented in the same year B.) they were all invented by the same scientist C.

Consider the reaction: 2 NO (g) + 5 H2 (g) → 2 NH3 (g) + 2 H2O (g) A reaction mixture initially contains 5 moles of NO and 10 moles of H2. Which set of amounts best represents the mixture after the reactants have reacted as completely as possible?