Chemistry, 17.10.2019 00:30, jamilamiller200
Which of the following regarding atmospheric pressure is true?
air pressure at sea level is approximately 1013.2 mb.
the tropopause serves as a buffer against the pressure exerted by the atmosphere.
while the atmosphere exerts pressure, it is a negligible amount.
atmospheric pressure increases with altitude and is, therefore, lowest near the earth's surface.
atmospheric pressure is greatest in the mesosphere.
# 2)
which of the following regarding the dimensions of the known universe, the milky way, and our solar system is not true?
earth is closest to the sun during the month of june.
on average, the moon is 384,000 km (238,866 mi) from earth.
on average, the sun is approximately 150 million km (93 million mi) from earth.
which of the following regarding the dimensions of the known universe, the milky way, and our solar system is not true?
the known universe stretches approximately 12 billion light years in all directions.
Answers: 2
Chemistry, 21.06.2019 22:30, mimireds5419
1. combine iron and copper (ii) sulfate solution. (hint: iron will form the iron (iii) ion) fe + cuso4 β 2. combine lead (ii) nitrate and potassium iodide solutions. pb(no3)2+ kl β 3. combine magnesium metal and hydrochloric acid solution. mg + hcl β 4. electrolysis (splitting) of water. h2o β 5. burning magnesium. mg + o2 β
Answers: 3
Chemistry, 22.06.2019 01:50, lildestinyquintana
Ase your answer to this question on the information below. hydrocarbons and fissionable nuclei are among the sources used for the production of energy in the united states. a chemical reaction produces much less energy than a nuclear reaction per mole of reactant. the balanced chemical equation below represents the reaction of one molecule of a hydrocarbon with two molecules of oxygen. chemical equation: ch4 + 2o2 β co2 + 2h2o + 1.48 Γ 10β18 jthe nuclear equation below represents one of the many possible reactions for one fissionable nucleus. in this equation, x represents a missing product. nuclear equation: write an isotopic notation for the missing product represented by x in the nuclear equation.
Answers: 1
Which of the following regarding atmospheric pressure is true?
air pressure at sea leve...
air pressure at sea leve...
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