Write the compound for

hydrogen + Chlorine

Magnesium + Oxygen

Calcium + Fluorine

Lithium + Phosphorus

Beryllium + Bromine

If an object has 62 joules of gravitational potential energy then? A: there is no way to find the amount of work done. B: the work required to lift it to that height is the same. C: the work required to lift it to the height is 31 joules.

Two members of the Boron family owe their names to bright lines in their emission spectra. Indium has a bright indigo blue line (451.1nm) and Thallium has a bright green line (535.0 nm). What are the energies of these two spectra lines?

If you test a solution with red litmus paper and it turns blue, what can you conclude?

How many atoms are in this formula? O 2 1 2 3 4

Which set contains no ionic species? (A) NH4Cl, OF2, H2S (B) CO2, Cl2, CCl4 (C) BF3, AlF3, TlF3 (D) I2, CaO, CH3Cl

How many unpaired electrons arethere in Cu1 + ion

A 750 mL sample of nitrogen is heated from 30°C to 92 C at constant pressure. What is the final volume?

Write a brief explanation about why a plant extract is a mixture

What is an element that has more valence electrons than fluorine and less energy levels than sodium?

Why can't we breathe in pure oxygen for long