Which elements combine by forming an ionic bond

1) sodium and hydrogen

2) sodium and oxygen

3) carbon and oxygen

4) carbon and sulfur

A mass of 21.5 grams of calcium hydroxide reacts with an excess of phosphoric acid. what mass of calcium phosphate could be recovered from solution?

Which of the following correctly describes a Brønsted-Lowry base?

What is the volume of 9.5 g fluorine gas, F2, at STP?

Describe the three states of matter in terms of shape and volume

The concentration of which ion is increased when LiOH is dissolved in water? 1. hydroxide ion 2. hydrogen ion 3hydronium ion 4. halide ion

The hydrogen spectrum has a red line at 656 nm, and a blue line at 434 nm. What is the first order angular separation between the two spectral lines obtained with a diffraction grating with 5000 rulings/cm? A. 7.7 degrees B. 16.6 degrees C. 6.

g write net ionic equations for the reactions of h2po4 - an amphiprotic ion with aqueous solutions of hcl koh

Eagles use sharp talons to grab fish from the water. What characteristic of life is this most directly an example of?

Which of the following statements about rock and mineral resources is true

What are similarities between opinion based research and observation based research