Are ionic compounds or covalent compounds usually soluble in water

Which of the following reactions involves two or more substances combining to form a new compound?

A wave with a frequency of 5 Hz is traveling at a velocity of 10 m/s. What is the wavelength?

At STP, which element is solid, brittle, and a poor conductor of electricity? (1) Al (3) Ne (2) K (4) S

8 Which quantity is equal to one mole of Au? (1) the atomic mass in grams (2) the atomic number in grams (3) the mass of neutrons in grams (4) the number of neutrons in grams

Fill in the numbers to interpret the isotope symbols. 86Rn^222 has __ protons, __ neutrons, __ electrons.

Sodium (Na) reacts with chlorine gas (Cl2 ) to form sodium chloride (NaCl) as shown in the equation: 2Na + Cl2 → 2NaCl If 4 moles of chlorine gas react, how many moles of sodium will react?

What are transuranium elements properties?

A geologist finds a section of rock that shows was ripple marks. What does it he pr send me or a ripple marks say about the area where the rock formed? A. the rock from rk s in a fast moving stream B.

375centimetercube of a gas has a pressure of 770mmHg. find it's volume if the pressure is reduced to 750mmHg

How did the planets in our solar system form?