Which property is a measure of the average kinetic energy of the particles in a sample or matter?(1) mass (2) density (3) pressure (4) temperature
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of the average kinetic energy of its constituent particles.
That's choice-(4) .
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Which variables can affect the speed of a chemical reaction? (Choose all that apply)A.) Addition of inhibitorB.) Change in concentration of reactantC.) TemperatureD.) Particle size
What do not have a definite shape or volume in sience?
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species; heredity
B.
genotype; phenotype
C.
heredity; species
D.
phenotype; genotype
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genotype; phenotype
Genetic variation determines inherited differences between individuals . Our height or eye color are inherited from our parents, but our phenotype is also affected by environment such as the food we eat (diet), drugs we take, toxins surrounding us, climate, location, culture, physical accidents and lifestyle.
Answer: Option B
Explanation: Any organism can be defined by two factors one is its genotype and other one is its phenotype.
The genetic composition of the body of an organism can be said as its genotype. The genes are present inside the cell and determines the physical characters of an organism.
The phenotype can be defined as the physical appearance of the organism. Example: height, color of the organism.
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The correct answer is 0.014467 M.
Molarity is defined as the number of moles present in a liter solution, that is, number of moles / liter solution.
The molar mass of sodium (Na) is 23.0 g/mol
Thus, 1 mole of Na contains 23.0 g
Now, x moles of Na contains 0.50 g
Moles = 0.50 × 1 / 23.0
Moles = 0.50 / 23.0
= 0.0217 moles of Na
Molarity = Number of moles / liters of solution
= 0.0217 / 1.5
= 0.014467 M
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Answer:
1981.38L
Explanation:
P=29.8atm;
T=273+99.9=372.9⁰K
V=90.82L
P₀=1atm
T₀=273⁰K
V₀-?
PV/T=P₀V₀/T₀
V₀=PVT₀/P₀T=
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well i think what you do first is that you would divide that number of amu by 6.02 x 10^23 and that will get you the number of moles of H2. once you have the number of moles you divide the number of moles by the molar mass of H2 and that should give you the grams. i’m trying to explain this as best as possible sorry if ur still confused.
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Look, this shouldn't be that hard. As long as you know the symbol for each element, you just put a subscript to indicate how many there are in each compound.
For the second row, there is one C and 4 H's. That's , or methane.
For the third row, there is one Si and 2 O's. That's , or common glass/quartz.