Oxygen gas
Water
Explanation:
In the process of cellular respiration, carbohydrate combines with Oxygen gas to produce carbon dioxide, water and energy.
Cellular respiration is the reverse process of photosynthesis.
During cellular respiration, carbohydrate is used to produce energy when they combines with oxygen gas. The produces are waste carbon dioxide and water vapor and energy.
The energy produced is the desired end product that is needed by all life.
Carbohydrate + Oxygen gas → Carbon dioxide + Water + energy
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from the 19 protons
Answer:
+19
Explanation:
potassium, k, has 19 protons, 20 neutrons, and 19 electrons. what is the charge of the atom’s nucleus?
since only neutrons and protons are in the nucleus, the overall charge in the nucleus is +19 from the 19 protons
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.
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Answer:
Concentration, pressure, and temperature are the three factors that affect chemical equilibrium
The concentration in ppm = 125,000 ppm
<h3>Further explanation</h3>
The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.
ppm or parts per million (ppm) :
For water solvent = 1 ppm ⇒ 1 mg/L(1 kg=1 L,ρ water=1 kg/L)
In percent mass = 1 ppm ⇒ 1 mg/ 1 kg
Solution contains 0.25 kg of lead in 2 kg of water :
Solvent = water = 2 kg = 2 L
Solute= lead=0.25 kg=250000 mg
So the concentration in ppm :
