Two chemical reactions are shown:

C + O2 → CO2

CO2 + H2O → H2CO3

Which statement is true? (5 points)

Both are synthesis reactions.

Both are decomposition reactions.

A is a synthesis reaction, and B is a decomposition reaction.

A is a decomposition reaction, and B is a synthesis reaction.

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Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Select the correct answer from each drop-down menu. describe what happens to a carbon-11 atom when it undergoes positron emission. the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons