Why is helium not placed over beryllium on the periodic table

Ionic bonds are stronger, and one atom gives an electron to the other atom. True False

Maple syrup, which comes from the sap of maple trees, is a mixture of water and natural sugars. It's a clear, brown liquid. It's homogeneous, and the sugars cannot be separated by filtration or centrifuge. What type of mixture is it? A. suspension B.

Suppose 45.0 g of water at 85 °C is added to 105.0 g of ice at 0 °C. The molar heat of fusion of water is 6.01 kJ/mol, and the specific heat of water is 4.18 J/g °C.

The following reaction is first order in N2O5: N2O5 (g) →NO3 (g) + NO2 (g) The rate constant for the reaction at a certain temperature is 0.053/s Calculate the rate of the reaction when [N2O5] = 5.1*10-2 M.

Which of the following would dissolve in water, and why? None of these substances would dissolve in water Candle wax, it is a nonpolar substance Motor oil, its primary IMF is London Dispersion Forces Acetic acid, it ionizes into ions when added to

Foods labeled "fat free" can actually contain less than 0.5 grams of fat.

Plants make their own food. The chemical reaction for this process is shown in the equation below. CO2 + H2O + energy → C6H1206 + O2 What are the products in this chemical reaction? O A. C6H1206 + energy O B. H20 + energy O C. CoH1206+02 O D.

Using ohm's law, explain how voltage changes in relation to current, assuming that resistance remains constant.

An average copper penny minted in the 1960s contained about 3.000 g of copper. how much chalcopyrite had be mined to produce 100 pennies?

Which pack has the greatest change in enthalpy, warm packs (such as hand warmers) or cold packs (such as an ice pack) ?