22. The density of magnesium is 1.74 g/cm. What is the mass of a magnesium block that measures 2.5 cm X 3.5 cm X 1.5 cm? a) 48 g b) 23 g c) 12 g d) 7.5 g

Q: In Section 1.10, it was stated that 1 mol of sand grains would cover the state of Texas to several…

A: SOLUTION: Step 1: Simple Volume of 1 sand grain = (0.10 mm)3 = 0.001 mm3. 1 mole of sand =…

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A: Isoelectronic species are defined as the elements or ions having equal number of electrons but…

Q: Use the References to access important values if needed for this question. [References] 1 pts M) 1A…

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

Q: What is the radius (in cm) of a pure copper sphere that contains 1.14 * 1024 copper atoms? [The…

A: Given information:

Q: Convert atomic mass of Ca to g. atomic mass of Ca is 40.08 amu  Group of answer choices   A.) 3.00…

A:

Q: A sample of metal weighing 2.24 g is combined with oxygen; the metal oxide weighs 23.5 g. The mass…

A: Given values-> Weight of metal = 2.24gram Weight of metal oxide = 23.5gram

Q: a. 25.9% N, 74.1% O b. 43.4 % Na, 11.3% C c. 18.8 % Na, 29.0% C

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

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A: The question is based on the concept of density. density is an intensive property of the substance…

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A:

Q: 34. Barium Carbonate (s) Barium Oxide (s) + Carbon Dioxide lg) a&b: C: d:

A: Answer:- this question is answered by using the simple concept of writing the balanced chemical…

Q: Compare the amount of copper predicted in part A with the amount measured in part B. What percentage…

A: Predicted copper amount=0.9918 Actual amount of copper produced= 0.72

Q: en 4.70 and 6.70 en 3.82 and 5.82 en 1.82 and 3.82 en 2.82 and 4.82 en 5.70 and 7.70

A: It is Acidic buffer,  So, pH range for buffer solution  pH = pKa +/- 1 pKa = 2.82

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A: Since density is given by  density = mass / volume  volume given = 38.8 x 1010 cm3  Since 1 m = 100…

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

A:

Q: 1A 8A H 2A 3A 4A 5A 6A 7A He B C NO F Ne Li Be Na Mg 3B 4B 5B 6B 78 r 8B - 1B 2B A1 si PS cI Ar K Ca…

A: We have to find how many covalent bonds will bromine have in order to fulfil octet rule.

Q: A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 36 mg. Which of the…

A:

Q: Determine the number of atoms in 1.85×10^-3L of Mercury. [The density of mercury is 13.5g/mL.]

A:

Q: Given 24/14 Si, a) Find the number of protons, electrons and neutrons in the neutral atom. b) Find…

A: The answer is attached below-:

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A: Given: Volume of iridium in cm3 = 1.04 X 10-23 cm3.

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Q: Complete each of the following equations:

A: The complete reactions are given below -

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A: The copper wire is cylindrical and has a diameter of 2.00 mm.  2.00mm = 0.2 cm therefore radius =…

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: chemical properties?

A:

Q: C;HO2 15 1 09 3H.t J=7 2 27 2H.9 J=7 110 1H,brd s

A: Given is 1HNMR spectra

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A: Given that,radius of barium atom = 217 pm distance between one atom to another = 2.78 mm 1m = 1x1012…

Q: The mass of an unidentified rock is 15.5 grams. Students determine the volume of the rock by placing…

A: Tables -   Rock                 Density Range (g/cm3)  Coal.                    1.1 - 1.4…

Q: (d) Sb + He → I + ? 121 124 (e) 241 Am +'B → 4¿n+? 95 3° Cf + ? → 103L + 3 ¿n 259 98

A: Complete the following nuclear reaction ---

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A: Mass of the sample = volume x density                                 = 13.4 cm3 x 11.3 g/cm3…

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A:

Q: Classify each statement as an observation, a law, or a theory.a. Chlorine is a highly reactive…

A: Law: A descriptive generalization about how some aspect of the natural world behaves under stated…

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Q: 1A 8A H 2A 3A 4A 5A 6A 7A He Li Be B C NO F Ne Na Mg 3B 4B 5B 6B 7B r 8B - 1B 28 A1 Si PS CI Ar K Ca…

A:

Q: Complete the following shorthand notations: ? (p, a) Li P (a, ?) s 242Cm (a, n) ? Mg (?,p) iNa 15 16…

A:

Q: j. 1630 + 1630 → k. 6228NI + 'on →. I. + *2He → 63 29Cu + °1B

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Q: 1. a) Calculate the mass percent of NaHCO3 based on the manufacturer's list of ingredients: 325 mg…

A: mass % of NaHCO3 = mass of NaHCO3 in tabletsum of mass of all ingredients x 100 sum of mass of all…

Q: 2H2 (g) + O2 (g) 2H20 (g) C(graphite) + CO{g) =2 CO(g) CO2(g) + H2(g) = CO(g) + H2O(g) Ke Ke = 0.64…

A: Kp =kc * (C0RT/P0)delta n Co is the equilibrium concentration, po= equilibrium pressure. Delta n=…

Q: Q.27. Find number of aluminum (Al) atoms in a peace of pure (Al) block with dimensions equal to 2.0…

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Q: 1. A typical multivitamin tablet can contain 2.00 mg of vitamin B2 (riboflavin), and the RDA is…

A: The solution is given below -

Q: Part 1 N,0(g) + NO,(g) 3NO(g) 2. Choose one: (3 [NO (g)]) 3 K = %3D [N2O (g)] [NO2 (g)] NO (g)] [N2O…

A:

Q: 1A 8A H 2A 3A 4A 5A 6A 7A He Li Be B C NOF Ne Na Mg 38 4B 5B 6B 7B A1 si P S cI Ar K Ca sc Ti v Cr…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: An iron wire has a diameter of 0.500 mm. What length of this wire contains exactly 1.00 mol of iron…

A: Given:  Diameter = 0.500 mm = 0.05 cm  So, radius = 0.05/2 = 0.025 cm  Moles of iron = 1.0 mole…

Q: 1A 8A H 2A 3A 4A 5A 6A 7A He Li Be B C NOF Ne Na Mg 3B 4B 5B 6B 7B 1B 2B A1 Si PS CI Ar K Ca sc Ti v…

A:

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.