6.48 g of calcium hydrogencarbonate, Ca(HCO, was dissolved in water to make 500 cm of the solution. Which one of the following is the molarity
of the solution? (H=1; C =12: 0 = 16: Ca = 40)​

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next