1.15 g of a metallic element reacts with 300cm3 of oxygen at 298K and 1 atm pressure, to form an oxide which contains O2 - ions.

What could be the identity of the metal?

A calcium

B magnesium

C potassium

D sodium

What is used to calculate average atomic mass of an element?

How does the sharing of bonding electrons in a molecule of Cl2 compare to that in a molecule of HCI?

What causes the reaction between baking soda and vinegar?

Determine the type of reaction: agno3 + cu - - > cu (no3) 2 + ag double displacement single displacement synthesis decomposition

Carbon forms bonds by sharing an electron in one of its orbitals with an orbital of another atom that also contains one electron. Given this constraint, how many bonds can carbon form according to its electron configuration?

Complete the following statement by checking all that apply Creativity allows scientists to develop multiple approaches to solving problems. adapt to changes in scientific knowledge. look at old problems in new ways.

The atomic weight of hydrogen is 1.00794. a. True b. False

Describe What kind of ions do metals form? What kind of ions do nonmetals form?

A car is driven through streets treated with salt and then parked in a warm garage. a) How will the rate of rusting compare with a car that has not been driven in the streets treated with salt but left parked outside?

Amalgam is an alloy that contains mercury and other metals. Which of these atoms would most likely form metallic bonds with mercury? Check all that apply. bromine copper hydrogen iodine silver tin