How many places are there for electrons in the third shell of an atom? A. 2 B. 4 C. 8 D. 12

Would you expect hydrogen chloride to be a gas, liquid, or a solid at room temp and pressure? explain your answer (its a 3 mark so dont explain it that much)

In what state of matter are the particles vibrating at high speeds? A) gas B) liquid C) solid D) plasma

Which part of modern atomic theory was first developed by John Dalton? A) Electrons are found in a cloud around the nucleus B) Atoms are rearranged during chemical reactions C) Atoms cannot be divided D) Electrons are spread through an atom

What will the charge oxidiation state be for boron

In nuclear fission, atomic nuclei are A. split B. joined together C. destroyed D. created

Andrea is performing an experiment in which she needs to know when a strong acid is present. She is not sure which indicator to use, so she looks up the following table in her science textbook. Indicator pH range thymol Blue 1.2 - 2.8 phenol Red 6.

Which represents the balanced nuclear equation for the beta plus decay of C-11? Superscript 11 subscript 6 upper C right arrow superscript 11 subscript 5 upper B plus superscript 0 subscript plus 1 e.

Make a prediction for how to identify an unknown element and the chemical composition of a star

The density of HCN (hydrogen cyanide) gas at STP is 1.21g/L. What volume will 100.0g of HCN occupy at STP? A) 121 L B) 0.012 L C) 82.6 L D) none of the above

A 20.0 ml sample of 0.150 m ethylamine is titrated with 0.0981 m hcl. what is the ph after the addition of 5.0 ml of hcl? for ethylamine, pkb = 3.25