A chemist has a block of lead metal (density is 11.3 g/mL). They drop the metal into a graduated cylinder containing water, and find the volume change is 1.50 mL. What is the mass of the block, in grams?

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Q: 1. The antibacterial activity of flavonoids was tested against the bacterial strain, Escherichia…

A: A question based on molecules that is to be accomplished.

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A: Given: Volume of acid = 15.3 mL Concentration of acid = 0.1 M Volume of alkaline sample = 25 mL

Q: Name compound according to the IUPAC system:

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Q: # 65 of 214 A2 equivalence 25.00 mL of a solution containing 0.1333 M ammonia (K = 1.76 x 10-5) is…

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A: Osmolarity can be calculated from the number of solute particles.

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A: 2,2-dimethyl butane are volatile organic compounds that are constituent of air pollution.

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Q: O methyl O ethyl O propyl butyl

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Q: Which would melt first, germanium with a melting point of 1210 K or gold with a melting point of…

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Q: Which statement is no of Brownian motion? It is independent of temperature. It is due to the random…

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Q: In the specific heat equation the delta T symbol (∆T) stand for?

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Q: What is the reactant side? Left or right?

A: reactants  <=> products Given reversible reaction is C6H12O6(aq) + 6 O2(g) <=>6 CO2(g) +…

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Q: Based on the nanomaterials and analytical methods, propose methods on mitigation of COVID-19 spread

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Q: 2 Ag+ (aq) + fe(s) → Fe²+ (22) + 2 Agis) €₁ = ? 9 +2.04 V +1.24 V 6 c) +0-36V d) -0.36V el -1.24V

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A: A question based on molecules that is to be accomplished.

Q: 10. Potassium chloride (KCI) has a molar mass of 74.551 g/mol. Calculate the mass in grams of KCl…

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Q: What if not taken in excess?

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.