How many helium atoms are there in a helium blimp containing 539kg of helium

What does A pH of 10 denote?

Suppose during a lab that 65kJ of energy were transferred to 450 g of water at 20 degree Celsius. What would have been the final temperature of the water

Which element has 5 outer electrons in its 3rd shell?

What two elements constitute about three fourths of earth's solid surface?

Karla added green pellets to a container of water before she began watering her lawn. What correctly describes the solvent in her solution. The green pellets are the solvent because it is dissolved in water.

Which formula id correctly paired with its name? A. MgSO↓ = magnesium chlorine B. FeO = iron (|||) oxide C. K↓2O = Phosphorus dioxide D. CuCI↓2 = copper (||) chloride

Which of the following correctly explains the role of enzymes in biochemical reactions? A) Enzymes provide energy in the form of ATP to lower the activation energy needed for the reaction.

How does being a landlord relate to chemistry in any way

Element m has an ellectronegativity of less than 1.2 and reacts with bromine to form the compound MBr2. Element M could be?

Which situation describes evidence of a chemical change? A. When food color is added to water, it changes color. B. A solid changes into liquid when heated. C. A solution feels warm after a cool solid is added to it. D.