O CHEMICAL REACTIONS Interconverting number of atoms and mass of compound Calculate the mass of tetraborane (B H10) that contains a trillion (1.000 x 10) hydrogen atoms. Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits. II

Q: Purple spheres represent iodine atoms, white spheres represent hydrogen atoms, and all of the…

A: Given:  Purple atom = Iodine (I) White atom = Hydrogen (H)

Q: Calculate the number of chlorine atoms in a 110.0 g sample of gold(III) chloride (Au₂C16). Be sure…

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Q: C6H15N express your answer in atomic mass units to two decimal places

A: Atomic mass unit  mass equal to one twelfth of the mass of an atom of carbon-12.  Atomic mass unit…

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: If 26.98 grams is the mass of 1 mole of Aluminum, 26.98 grams =1 mole of Al 13.49 grams = 0.5 moles…

A: Mole concept relates the number of moles with the molar mass and mass of the substance. Just like…

Q: A copper atom has a mass of  ×1.0610−22g  and a penny has a mass of  2.5g . Use this information…

A: Given data :· Mass of copper atom = 1.06×10-22 g· Mass of Penny = 2.5 gWe need to calculate :· The…

Q: The astronaut then measures the abundance of silicon on the new planet, obtaining the following…

A: Isotopes are defined as the ones which have same atomic number but different mass number. Atomic…

Q: In a series of experiments, a chemist prepared three differentcompounds that contain only iodine and…

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Q: A sample of tryptophan synthesized in the laboratory contains 29.4 g of carbon and 7.12 g of oxygen.…

A: Law of definite proportions indicate that irrespective of source, the amount of substance present in…

Q: Naturally occurring cobalt consists of only one isotope, 58.9332. A synthetic radioactive isotope of…

A: From given data;  Initially % of 60Co is determined and then weight of 60Co is calculated as…

Q: Part A 1s 25 2p 3s Express your answer as a chemical symbol.

A: The electronic configuration depicts the arrangement of electrons in a molecule. The no. of…

Q: . Polonium-210 is an alpha-emitting radioactive isotope that causes irreversible damage to organs…

A: Two questions based on nuclear reactions and general chemistry that are to be accomplished.

Q: 2.77 Identify the following as elements or compounds: NH3, N2, Sg, NO, CO, CO,, H2, SO2.

A: Matter is any substance that occupies space and volume. Matter is classified into pure substances…

Q: Which of the following is not a correct mass of one sodium atom? a) 23 amu b) 23 g c) 3.82x10-23 kg…

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Q: How many grams of oxygen (O) are present in a 6.41 g sample of potassium nitrate (KNO3)? Enter your…

A: Potassium nitrate (KNO3) is ionic compound and it contains one potassium, one nitrogen and three…

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: Nitrogen 1s 2s 2p 3s a. Chlorine 1s 2s 2p 3s Зр b. Sodium_ 1s 2s 2p 3s Зр c. Neon 36 3n

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: – 12 mg and an oil tanker has a mass of 3.0 x 10' kg. A virus has a mass of 9.0 x 1 Use this…

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Q: An atom of rhodium (Rh) has a diameter of about  2.7×10−8cm2.7×10−8cm   If the atom is assumed to…

A: The diameter of the rhodium atom is = 2.7×10-8 cm The volume of rhodium atom in m3 is =?

Q: 99g of molybdenum-95 (isotopic mass = 94.91 amu Please enter your response to the appropriat number…

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Q: A chemist is trying to identify an unknown metal, and finds that 25.0 cm³ of the substance has a…

A: Given: Volume of the metal, V=25 cm3 Mass of the metal, m=224.43 g Temperature, T=20°C

Q: A hydrogen-filled balloon was ignited and 1.70 gg of hydrogen reacted with 13.6 gg of oxygen. How…

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Q: While cleaning your attic, you found your old rock collection. If 83.58% of the rocks have a mass of…

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Q: Calculate the number of magnesium atoms in a 60.0 g sample of forsterite (Mg, SiO). Be sure your…

A: Given,  The mass of forsterite (Mg2SiO4 ) = 60.0 g.  The number of atoms of Magnesium is:

Q: 1. Which is true about the Law of Conservation of Mass? 3. What was one of the tests that Lavoisier…

A: 1. D. Atoms cannot be created or destroyed, only rearranged. The Law of Conservation of Mass implies…

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

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Q: How many sigfigs does this number have 0.021?

A: Rules:- All non-zero digits are significant. Zeros between non-zeros are significant. Trailing…

Q: 32 Which element does X represent in the following expression: X? 15 Enter the chemical symbol of…

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Q: Complete and balance the following equations. Click in the answer box to open the symbol palette. 1…

A: Since,  We know that,  Balanced equation means number of proton and mass number in reactant side is…

Q: - Compare Two compounds that contain copper and chlorine have the following masses: Compound A:…

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Q: What is the volume of a molybdenum atom in microliters?

A: 1 cm3 = 1 mL  1 mL = 0.001 L  1 mL = 1000 microliters

Q: Tennessine has two naturally occurring isotopes.  Tennessine-293 has an atomic mass of 292.9498 and…

A: Given  Atomic mass of Tennessine -293 ( m1 )  = 292.9498 amu Atomic mass of Tennessine - 296 ( m2 )…

Q: In a lab experiment, 8.21g of phosphorus reacts with bromine to form 71.75 g of phosphorus…

A: 2P            +                     3Br2                         ====>…

Q: po, EXEI, UNuvijUEI OWUTU. = 192 g νερό. τάση για εμπέδωση Τι σημαίνει η έκφραση: cυδατικό διάλυμα…

A: 1. 3% aqueous sodium chloride means there is 3g of NaCl in 100g of water.

Q: A piece of aluminum foil is 0.0150 cm thick. Calculate the thickness of the aluminum foil in terms…

A: Thickness of the aluminum foil = 0.0150 cm…

Q: chemical properties?

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Q: Neutron stars form when large stars collapse. They are very dense, having an average density of…

A: The density of neutron star is 4.8×1017 Kg/m3.  Unit conversion 1 m3 = 109 mm3  so, the density of…

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 newly found element, Savannium, is composed of three different isotopes. In every sample, there is…

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Q: Fe2O3 express your answer in atomic mass units to two decimal places

A: Atomic mass unit is a unit which express the relative masses of atoms. One atomic mass unit is equal…

Q: One mole of silicon (6 x 1023 atoms) has a mass of 28 grams, as shown in the periodic table on the…

A: Given :- Mass of 6 × 1023 atoms = 28g  Density = 2.4g/cm3

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: 3. What is the mass of one atom of Na (include units) -339 4. What is the mass of one atom of carbon…

A: Mass of an atom = (no. of protons × mass of  one proton) + (number of neutrons × mass of one…

Q: MCQ 9: Two Greek words 'element' and 'measure' constitutes the word A. spectrometry B. stoichiometry…

A: In Greek language, word stoikhein means the element. And word metron means measure. That is why word…

Q: On a mission to a newly discovered planet, an astronaut finds gallium abundances of 60.11 % for 69…

A: Average atomic mass =((percentage of abundance isotope 1 x molecular mass of of isotope 1…

Q: Which of the following is not a correct mass of one sodium atom? a) 23 amu b) 23 g c) 3.82x10-23 kg…

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Q: 3.2 The mass of oxygen in C,H6O2 is: A. 53 В. 40 С. 26 D. 69 E. 6.7 edited 3:10 AM /

A: Total mass of oxygen = 16×2 = 32gm And percentage of oxygen is 26%.

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.