Convert the mass of zinc in the data table into moles of zinc using the atomic mass of zinc. Data Table Mass of Zn HCI Volume Tinitial Tfinal 0.55 g 100.0 ml 20.0 °C 23.1°C How many moles of zinc were used?

Q: How many atoms of silver are in a bracelet that weighs 34.0 g? O 1.1 x 1023 O 1.1 x 106 O 1.9 x 1023…

A: We have to calculate the number of atoms.

Q: nd contains 12.4g of hydrogen. What is the percent by mass of hydrogen in the compound?

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Q: other elements. alyzeu P₁, A similar analysis is made of three other substances that also only…

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Q: Which of the following shows a correct setup? O1.45 mol Ca x- 40 g Ca X1 mol Ca O1.45 mol Ca x Са хт…

A:

Q: How many iodine atoms are present in 4.10 moles of diatomic iodine? Give your answer in scientific…

A: Given: The number of moles of diatomic iodine=4.10 moles To calculate: The number of iodine atoms.…

Q: 56.172g of pure (elemental) Si is equivalent o how many moles of Si?   A): 6.02 x 10^23 moles of…

A: SOLUTION Mass of elemental Si = 56.172 g Atomic mass of Si =  28.086 g/mol Moles of Si =…

Q: 7) To elements in the gas state react to form a new compound. Based on the state of matter of the…

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Q: Calculate the total number of N atoms in 23.8 g N2O5. O 2.65 x 1023 total N atoms O 9.31 x1023 total…

A:

Q: 719.03 g 35.00 mL 708.4 mol 0.67 L 2.09476 mol L x 3.95 L H = 0 mL mol mol

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A:

Q: Complete the resonance structure

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Q: You have 10.0 g each of Na, C, Pb, Cu and Ne. Which contains the largest number of atoms? Na C Pb Cu…

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Q: A lead fishing weight contains 0.19 mol of lead atoms. What is its mass?

A:

Q: A student has a sample of zinc that weighs 22.19 g How many zinc atoms are in this

A: Given :- mass of Zn = 22.19 g  To be calculated :- number of Zn  atoms  molar mass of Zn = 65.38…

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A: Complete each row of the table below by filling in the missing prefix or missing exponent.

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A: The first sample produced, mass of calcium =0.154 g Mass of fluorine = 0.146 g Second sample…

Q: If you calculated the molar mass of your unknown liquid to be 70.1 g/mol, which of the following do…

A: Given-> Calculated molar mass of unknown liquid =70.1 gm/mole.

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A: First Calculate the mass of Al :  Mass of Al = Density • volume  Mass of Al = 2.70gcm-3 • 13.2cm3…

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A: The relationship between mass and volume is given below.

Q: The atomic masses of chlorine-35 (75.780%) and chlorine-37 (24.220%) are 34.969 amu and 36.966 amu,…

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Q: Q/ 0.1 g a NaCL , qul Moarity2 L. Na = 23 . CI = 35.45 *

A: Kindly post question in english language from next time. I can't understand your language but…

Q: Convert the following percentages to proportions: 74.9%, .2%, 5.1%.

A: To solve this problem we will calculate the proportion of given percentage .

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Q: Calculate the number of hydrogen atoms in a 140.0 g sample of tetraborane (B,H0). Be sure your…

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Q: How many carbon atoms are present in 3.95 moles of carbon atoms? Give your answer in scientific…

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Q: Two different compounds both contain Element X and Element Y.  Compound I has 1.000 g Element X and…

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Q: How many moles does 120.30 g lithium represent? Use correct significant figures and units.

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Q: ite the term used for a certain number of things. (If u don't know, look it up!) An example is shown…

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

A:

Q: Analysis of a 20.0 g sample of pure carbon dioxide shows that it contains 5.46 g of carbon. How many…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: A chemist measures the amount of bromine liquid produced during an experiment. She finds that 2.3 g…

A: Given :- mass of bromine liquid produced = 2.3 g  To calculate :-  Number of moles of bromine liquid…

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Q: A tiny sample of gold contains  1.5 x 10^16 atoms. The mass of the gold sample is ______  μg.

A: Given the number of gold atoms, the tiny sample contains = 1.5*1016 atoms We have to find the mass…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.