3.28 x 10³ mol of water has a mass of 59.1156 kg. This is the accurate answer to the given question.
We can use the molar mass of water, which is 18.02 g/mol, to calculate the mass of 3.28 x 10³ moles of H2O. The following equation can be used to translate the quantity of moles into grams:
mass is determined by multiplying the number of moles by the molar mass.
Inputting the values provided yields:
18.02 g/mol times 3.28 x 10 3 moles of mass equals 59,115.6 g.
Lastly, by dividing by 1000, we can change the mass from grams to kilograms:
mass is 59,115.6 grams per kilogram (59.1156 kg).
As a result, 3.28 x 10³ moles of H2O have a mass of 59.1156 kg.
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B. Drying wood in a shed
C. Melting ice to obtain water
D. Evaporating alcohol into vapor
Coal combustion causes a chemical change. Burning coal in a furnace will result in a chemical change. Therefore, option A is correct.
A chemical change is the transformation of one material into another, the formation of new materials with different properties, and the formation of one or more new substances. It occurs when one substance reacts with another to form a new substance.
Coal combustion causes a chemical change. The main component, carbon, is converted to carbon dioxide when coal is burned. This process is irreversible.
When carbon is burned, it produces carbon dioxide, and hydrogen produces water. Each of these reactions generates a different amount of heat. Because this process cannot be reversed, coal combustion is a chemical change.
Thus, option A is correct.
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c. turning lithium into fluorine.
b. losing or gaining protons.
d. losing or gaining electrons.
A reaction rate is typically expressed as the change in the amount of reactants or products over a certain period of time. So the option b is correct.
The rate of a chemical reaction can be measured by monitoring the number of moles or molecules of a particular substance consumed or produced per unit of time. Hence, the expression "number/time" best represents a reaction rate. For example, if we observe the formation of 5 moles of product X in 2 minutes, the reaction rate of X would be 5 moles per 2 minutes (5 moles/2 minutes). This quantitative approach allows scientists to study reaction kinetics and understand the speed at which reactions proceed, enabling the optimization and control of various chemical processes. Hence option b is correct.
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B.Reproducing molecules evolved into living organisms by biological processes.
C.Rocks and fossils were transformed into living molecules by biological processes.
D.Atmospheric gases were transformed into living organisms by chemical changes.
the answer to your question would be A
hope i heled
Answer:
A. Non-living molecules evolved into living molecules by chemical changes.
Explanation:
The Big Island of Hawaii
The Appalachian Mountains
The Himalaya Mountain Range