Explain whether smoke filling up a room is diffusion or not

In an ionic bond, Select one: A. atoms, having gained or lost electrons, attract one another with opposite charges. B. two atoms are attracted by the same charges. C. atoms attract each other by sharing electrons to fill their valence shells. D.

Convert 43.0 grams of SiH4 to moles

Determine the number of protons neutrons and electrons in an isotope that has 21 neutrons and a mass number of 40

According to Reference Table F, which of these compounds is the least soluble in water? (1) K2CO3 (3) Ca3 (PO4) 2 (2) KC2H3O2 (4) Ca (NO3) 2

19. Why is slow-freezing so damaging to food compared to fast freezing?

Dalton's atomic theory stated?

Give formulas for the following mercury compounds.

Pure water is neutral. What is the appropriate justification for this?

An acidic solution has a ph value of

Is a dependent variable a constant or a control