SOLUTION CHANGE IN TEMPE RATURE 15g Fe (150°C) + 80g Hu0(20°C) 12.56°C

Q: A 24.5g sample of solution has a density of 0.768g/mL. What is the sample volume (in mL)?

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Q: The question is in the picture

A: The methane gas reacts with the chlorine gas and forms carbon tetrachloride. The equation for the…

Q: what is 1,660,712.03094 miles to meters

A: Mile can be defined as a unit of distance and is equal to 5,280 feet or 1,760 yards. Distance is…

Q: how many grams are in 11 kilograms and how many millilters are in a 0.076 liters?

A: It looks like there are two parts in the question. Please find the solution below,Part a:  How many…

Q: Calculate deltaG in kJ NO2 (g) + SO2 (g) --> NO (g) + SO3 (g) deltaGo (NO2) = 51.37 kJ/mol…

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Q: what is the mass of 211 mL of mercury

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Q: The number 18.01937 rounded to 3 significant figures is

A: Rounding a number to three significant figures in the same way ,rounding to three decimal places.…

Q: Please help me solve this problem, explain and make sure everything is correct 100% thanks

A: Step 1: IBr2-Number of valence electrons of Iodine: 7 electrons.Number of valence electrons of…

Q: the concentration of a standard polyphosphate solution is 1 milligram per milliliter. if 7…

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Q: The doctor prescribes a medicine that will be given 3 units for 12 hours, the concentration of the…

A: Calculate the volume of medicine from the given concentration of medicine.

Q: Which of the following is NOT a resonance contributor of the ion below? OH OOH

A: While writing resonating structures, it should be kept in mind that only electron may be shifted to…

Q: 7. How many milligrams are in 850 nanograms?

A: According to the question, The given value is = 850 nanograms Nano grams is a unit of mass. Find the…

Q: Use exponential notation to express 4.22 mg in grams

A: Conversions: 1 gm = 1000 mg 1mg = 10-3 g.

Q: I have a question, What number is of value and units.

A: Part A) Moles of methane produce when hydrogen is in excess.Part B) Moles of hydrogen react to…

Q: A salt water solution is classified as what type of matter? O homogeneous mixture O heterogencous…

A: Homogeneous Mixture: A homogeneous mixture is a mixture in which the composition is uniform…

Q: The aluminum sample is dissolved in HCl and H2 gas is produced and collected over water.  The volume…

A: The reaction aluminum sample with HCl to produce H2 is as follows: 2Al + 6HCl → 2AlCl3 + 3H2  The…

Q: Determine the amount of potassium chloride in each solution. 21.7 g of a solution containing 1.04%…

A: Mass percent of the solution is equal to the ratio of mass of solute and mass of solution multiplied…

Q: decide if the given statement is true or false,and give a brief justification for your answer.If…

A: Given statement,    In the metric system, the concentration of chemical in a tank of solution is…

Q: What is the standard SI unit for mass?

A: Mass is a measure of the amount of matter in a substance. Mass measures the amount of matter…

Q: Adding or A chemistry student must write down in her lab notebook the concentration of a solution of…

A: It is given that, Empty weight of cylinder = 8.00 g Weight with KCl = 61.4 g Solution volume =…

Q: In an experiment, calcium carbonate reacted with different volumes of hydrochloric acid in water.…

A: Calcium carbonate reacts with hydrochloric acid to form the carbon dioxide gas.

Q: What is the total mass of silver gained or lost?

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Q: how many grams are in 370 milligrams?

A: Given: Mass = 370 mg

Q: When doing percent error do the estimated value and true value need the same amount of sig figs or…

A: The true value and the experimental values are calculated under different experimental conditions…

Q: In the metric system a liter is a measure of

A: Different units are used for the representation of different quantities in the metric system. Any…

Q: What does the term "inversely proportional" mean?

A: There are two type of relation, directly proportional or inversely proportional.

Q: 1. How many in2 are in 450cm2? For your answer enter the first 4 digits of your value.

A: Often while calculating, there is a need to convert units from one system to another system. The…

Q: 261.9 mi ≈≈  in

A: Conversion of mile to inch ?

Q: Can you explain to me about the Equivalent per liter example?

A: The number of gram equivalents of solute present in 1 litre of solution is called as the normality…

Q: An automobile of 3000 kg travels toward north with a constant velocity of 70 km/h . All forces…

A: Force is given by: F=m×a where m is the mass and a is the acceleration.

Q: Which of the following is a mixture? O All are mixtures salt water O vegetable soup O blood

A: mixture is formed when two different substances are mixed and they mixed physically,  no chemical…

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.