What is the oxidation number of NaMnO4?

A certain shade of blue has a frequency of 7.17 * 1014 hz. what is the energy of exactly one photon of this light?

The density of magnesium is 1.7 g/cm3, and the density of iron is 7.9 g/cm3. Consider a block of iron with a mass of 819 g. What is the mass of a block of magnesium that has the same volume as the block of iron?

Explain hydrogen sulphide as a compound of sulphur.

Why is a control needed in a valid experiment?

Neglecting friction, if a pendulum bob has 100 joules of kinetic energy at the bottom of its swing, how much potential energy does it have at the top of its swing? A) 0 J B) 50 J C) 100 J D) 200 J

Nitrogen combines with oxygen to form nitrogen monoxide (no) and nitrogen dioxide (no2). a sample of no consists of 1.14 g of oxygen and 1 g of nitrogen.

The modern periodic table reflects many improvements to Mendeleev's original table. If Mendeleev's table was incorrect, why is it still studied in chemistry classrooms today?

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Explain how the nettle is adapted for defence and protection

How many moles of water vapors are formed when 10L of butane gas is burned in oxygen at STP?