Define each symbol in Einstein’s equation: E = mc².

Q: A 29mL sample of chromium-51 contains 1.06 mCimCi. If a patient is to receive a 50 μCiμCi dose to…

A:

Q: Zn+ 2Au(CN)2 → Zn(CN)4+ 2Au What mass of gold would you expect to recover from 2.50x105 gr

A: Zn+ 2Au(CN)2 → Zn(CN)4+ 2Au2 mol  Au(CN)2 produces  2 mol Autherefore,2 g ×Au(CN)2 produces = 2 g…

Q: Which of the following are extrinsic properties? being made of paper O being to the left of a…

A: An extrinsic property is not essential or inherent to the subject that is being characterized.

Q: Which of the following has the smallest diameter?   Human hair   Combustion particles   Fine…

A: Which of the following has the smallest diameter? Answer is given below.

Q: K The material labeled K contains elements that do not conduct heat or electricity well The…

A: We have to name the elements from periodic table from given choices of options having similar…

Q: There are 2.60   x 1015 short tons of oxygen in the atmosphere (1 short ton 5 2000 lb). How many…

A: Consider the given information is as follows; Mass of oxygen in the atmosphere= 2.60×1015 short…

Q: The mass of a test tube and hydrate was 35.2755 grams. The mass of the empty test tube was 23.7726…

A: The difference of the mass of test tube and hydrate salt and empty test tube gives the mass of…

Q: What is 1.0 mg/cm2 in kg/m2

A: Please find your solution below : Unit conversion is a multi-step process that involves the…

Q: Which of the following is part O glass collection tubes a power source thormo meter

A: Hofmann apparatus used for  electrolysing  water and  it is invented  by August  Wilhelm Von…

Q: Solve this

A: The element contains one type of atoms only. The compound has two or more elements. The chemical and…

Q: How many years would it take for one mole of this radioactive material to decay so that just one…

A: The time which is required for the decay of one half of the amount of the species is called half…

Q: 99 235U + in → 2;Zr+ 135Te + 2X + ön ŽZr +

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Q: is ado ded tő r2+ (aa) t (aa) + 2X

A: According to the question, a soluble salt MX2 is added to water in a beaker. The dissolution…

Q: 4. Compare the total mass of the reactants with the total mass of the products: Total Mass of the…

A: Given reaction is,  K2CrO4 (aq) + Pb(NO3)2 (aq) →2KNO3 (aq) + PbCrO4 (s)

Q: What is the mass of phosphorus in a 45 kg person? .017 mass of P Incorrect

A: Determine mass of phosphorus in 45 Kg person?

Q: Magnesium, Mg Strontium, Sr Barium, Ba E Radium, Ra :::: :::

A: We know that on going left to right atomic radii decrease and on going from top to bottom atomic…

Q: two grains of a drug is equivalent to:  a. 129.6mg  b. 127.4 mg  c. 132.1 mg  d. 200 mg  e. 500 mg

A: Interpretation - Two grains of a drug is equivalent to , which one is correct -  a. 129.6mg  b.…

Q: Bromine (Br) and mercury (Hg) are the only two elements that occur as liquids at room temperature…

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Q: what weight in kilogram of sodium can you get from 3.57x10^24 ions of na2so4

A: In Na2SO4 , for every ion it there are two ions of the Na, implies for every mole of Na2SO4 there…

Q: Name two ways in which the metals shown here differ in generalappearance from the nonmetals.

A: Pure substances are divided into two categories which are metals and nonmetals. These elements…

Q: MCQ 25: Fireworks release energy in the form of A. heat B. light C. sound D. all of above

A: We know that,. Firework happen then three phenomena appear, 1)Heat 2)Light 3)Sound

Q: By how many grams will the total mass of the two electrodes change during this time period? The…

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Q: A sample of lead contains 8.88 x 1015 micrograms. How many atoms does this sample contain?

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Q: A chemist adds 85.0 mL of a 1.18 x 10 mM mercury(II) iodide (HgI,) solution to a reaction flask.…

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Q: The mass of a proton is 1.67 times 10-27kg. What is the mass of a proton in gigagrams?

A: The mass of a proton is 1.67 times 10-27kg. This mass of a proton is to be converted into gigagrams.

Q: Identify the numbers from the statements above as exact or measured. Sort these numbers into the…

A: here is the solution

Q: Calculate the mass in grams of 1 mole of footballs if one football has a mass of 0.43 kg.

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Q: 1) The hydrated salt Al(NO3)3 nH20 is 7.194% by mass of aluminum. Calculate the value of n.

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Q: Classîfy the size of the examples of matter as being on the macroscopic, microscopic, or atomic…

A: Macroscopic objects can be seen with the naked eye.  Microscopic objects cannot be seen with naked…

Q: 1s²2s 2p*3s' Express your answer as a chemical symbol.

A: Part A Excited electronic configuration is 1s2 2s2 2p4 3s1 1 electron from 2p transferred into 3s…

Q: Blue beads (Al): Yellow beads (S): Green beads (0):

A: FORMULA Al2 (SO4 )3 Al=2 atoms S=3 atoms O= 12 atoms     blue beads Al= 2 yellow beads S=3 green…

Q: Fill in the blanks for the table given below: [H+] [OH-] pH РОН 4.2 x 105 A B D 6.8 x 107 E F G H…

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Q: 3 Carefully put an egg in a glass half filled with vinegar. Replace the vinegar on the secohd day.…

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Q: Fill in the blanks by writing the name of the definition: _________ is a substance made up of only…

A: Matter classified into element compound mixture

Q: Q26 (B) 500 grams of Zn(XO3)2 contain  7.22 x 1023  molecules. Find name and symbol of X.m

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Q: A chemist adds 170.0 mL of a 5.72M silver nitrate (AgNO, solution to a reaction flask. Calculate the…

A: Dear student I have given answer to your question in the image format.

Q: Perform the following calculations and round your answer with the correct number of sig figs: a.…

A: In cases of multiplication and division, count the number of significant figures in each given…

Q: A modern penny weighs 2.5 g, but is only  2.52 % copper by mass.  Calculate the number of copper…

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Q: 12. In the equation X Ra+He, the symbol X represents A. Th B. Th C. Rn D. 230RN C. "Rn D. Rn 86

A: Hi, since you have posted multiple questions. We will answer the very first question for you. Kindly…

Q: 11. A stack of 500 sheets of typed paper is 1.9 inches thick. The thickness, in inches, of a stack…

A: If the stack of 500 sheets of paper is 1.9 inches thick, then each sheet of paper has thickness of…

Q: Which number has 2 sigfigs? O 1.2 x 105 O 11.11 O 276 8.

A: Option A is correct.

Q: The symbol of K+ represents one?

A: + sign indicates loss of electrons.

Q: Section 1: Names and Symbols 1. Find at least 3 elements named after countries 2. Find at least 3…

A: Name and symbol of the element 3 elements named after countries = ? 3 elements named after…

Q: The distance between two atoms was determined to be 11.4 nm. What is this distance in centimetres?…

A: Distance is measured in different units. For example nanometre (nm), picometre (pm), centimetre…

Q: You have 15 g of hemoglobin in every 100 mL of your blood. 10.0 mL of your blood can carry 2.01 mL…

A: Hemoglobin is the protein that is present in the red blood cells of the human body. It has four…

Q: A water sample has a mass of 45.433 g at 22.7 °C. Calculate the volume of the water

A:

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.