Which of the following is a combustion reaction?

a 2H2O 2H2 + O2

b 2AgNO3 + H2S yields Ag2S + 2NHO3

c CH4 + 2O2 yields CO2 + 2H2O

d 2Al + N2 yields 2AlN

Did Aristotle believe that forces are necessary to keep moving objects moving or did he believe that once moving they'd move by themselves

In a nuclear power plant control rods are used to

Ow many grams of sodium oxide can be produced when 55.3 g na react with 64.3 g o2? unbalanced equation: na + o2 → na2o show, or explain, all of your work along with the final answer.

To what volume should you dilute 30 mL of a 10.0 M H2SO4 solution to obtain a 0.170 M H2SO4 solution?

In general asexual reproduction is used by ___organisms

In which of the following situations does water undergo a change in physical properties? a. The bathroom fills with steam when you take a hot shower. b. The neighbor's pond freezes over in winter. c. Water is broken down to yield H2 and O2. d. a.

Which statement best describes the ideas of two scientists who studied properties of light? Newton and Maxwell had similar ideas about light being made of particles.

As transformações estão presente em nosso cotidiano, elas nunca param de acontecer, na sua maioria invisível a olho nu. Quais critérios é preciso observar para identificar se ocorreu transformação?

U human ear is measured in?

Is the earth older than any of the rock layers.