Lab Question Each atom of aluminum has a diameter of 420 picometers. Calculate how many. atoms thick the aluminum foil is. Report this value in both scientific notation and expanded notation.

Q: Which is the correct electron configuration for B2+ according to the molecular orbital theory? (5B)…

A: Find the solution below

Q: Suppose you analyze a 36.8 g sample of bleach and determine that there are 2.33 g of sodium…

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Q: Classify each substance as an element, a compound, a homogeneous mixture, or a heterogeneous…

A: Given substances :

Q: Which quantity represents the smallest mass?   Question 15 options:   1 g   10 g   100 g   100…

A: Mass is the amount of quantity of matter occupy by it.  Mass of the Substance can be measured by…

Q: A chemist weighed out 26.6 g of calcium. Calculate the number of moles of calcium she weighed out.

A: Mass of calcium = 26.6 gNumber of moles of calcium = ?

Q: Use your periodic table for this question. If you weigh 79.904 ounces of Bromine, how many ounces of…

A: Answer:Each mole of a sample always has  particles, so if two samples of different species have the…

Q: Covert 10.68 g to mg

A: The given question related to basic metric conversion. The given prefixes are the designation used…

Q: QUESTION: How much solute (lauric acid) do you need to add to the solvent wax (stearic acid) to make…

A: Suppose, x g of lauric acid is required to mix with the solvent wax stearic acid to make a 100 g…

Q: what as the weight percent of water in the hydrate before heating? Put answer in one decimal place.…

A: Mass percent or weight percent is defined as the total mass of the substance divided by total mass…

Q: If people were to start counting by 100s from the second they were born and never stopped until they…

A: We know that, 1 year = 365 days 1 day = 24 hours 1 hour = 60 min

Q: Consider a 8.83 g sample of C3H6C3H6. How many molecules are in this sample? Report your answer with…

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Q: What is the length in millimeters of a crystal of copper sulfate that is 0.180 in. long?

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Q: Why do you think it is best to use a capped vial when you determine the density of your unknown…

A: The density of any liquid is calculated by the formula, Where, m is the mass of liquid. V is the…

Q: If 8.112 g of nitrogen combines with 1.167 g of hydrogen to yield compound X, how many grams of…

A: To solve this problem, we'll first find the molar ratio of nitrogen to hydrogen in compound X using…

Q: Four pennies of exactly the same size are analyzed and found to have different % composition of…

A: composition defines the amount of copper present in per 100g of penny.

Q: What was the weight percent of water in the hydrate before heating?  Put answer in one decimal…

A: Weight percent of water in the hydrate before heating can be calculated using the given equation.

Q: What is the percent by weight (w/w%) of sugar in soda? Assume the average mass of sugar in soda is…

A: w/w % =( mass of solute(g)/mass of solution(g))*100

Q: If I need to round 7.45897 to 2 sigfigs,

A: All non-zeros are significant. 7.45897 has 6 significant figures

Q: Which of the following accurately describes the number of aluminum and oxygen atom A 3 atoms of…

A: Al2O3 is named as Alumina. It is a compound of aluminium.

Q: To how many significant figures can you report the mass of each solid sample? A) number of…

A: To determine the number of significant figures, apply these rules: Step 1: Non-zero digits are…

Q: A1 States of matter so she set up a) Kristina wanted to provide evidence that matter is made of…

A: i) NH3 is a base while HCl is an acid. These two will undergo a neutralization reaction as shown in…

Q: Using dimentional analysis, find the volume of 7.50 g of aluminum. Use conversion factor.

A: In this problem, we are tasked with determining the volume of a given mass of aluminum using…

Q: What was the weight percent of water in the hydrate before heating? Put answer in decimal place.…

A: To find the weight percent of water in the hydrate before heating, you can use the formula:Given:…

Q: the mass of a piece of Zn having a volume of 4.56 cm3

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Q: The elements that compose​ seawater, along with the corresponding​ percents, are shown in the table.…

A: The elements that compose of sea water are : Oxygen and Hydrogen Because composition of oxygen is…

Q: What is the percent by mass of sulfur in SO1? Your Answer:

A: Introduction : We have to calculate the percent by mass of SO1.

Q: Please correct answer and don't use hend raiting

A: Given:Mass of C4H10 (butane) = 4.6 g                     (2 significant figures)Mass of O2 (oxygen)…

Q: Question 15 The average distance between the earth and the moon is 384,403 km. How many dollar bills…

A: To calculate number of dollar bills are required first calculate how many inches are present in…

Q: 1. How many hydrogen atoms are in the compound (NH.).CO,?

A: This question belong to mole concept in physical chemistry. We have solved the problem by unitary…

Q: Which one of the following is the largest mass? A) 7.6 × 10ª mg B) 7.6 × 107 ng C) 7.6 × 10-2 kg D)…

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Q: You wish to prepare 222 grams of 21.0 % Fe(NO3)2. You will need grams of iron(II) nitrate and mL of…

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Q: Calculate the mass of 3.83 moles of barium. Your answer should be rounded to significant figures and…

A: We know, The formula for the number of moles ---- Number of moles (n) = Mass of the substance(g)…

Q: If I mix 250. grams of carbon, with 400. grams of chlorine, how many grams of carbon tetrachloride…

A: Mass of Carbon = 250. gMass of chlorine(Cl2) = 400. gAtomic mass of C = 12 g/molMolar mass of Cl =…

Q: Research and provide the densities of cesium and rubidium. Be sure to include units.   cesium:…

A: density of rubidium:-1.9 g.cm-3 at 20°C

Q: Example: Calcium nitrite is often used as a component of concrete. How many pounds of nitrogen are…

A: We can convert mass into moles, or moles into mass by the given formula :Moles of substance = (mass…

Q: What is the mass of 7.60 moles of magnesium chloride, MgCl₂? Express your answer with the…

A:

Q: Which of the following is the greatest mass? a. 2.3 x1012 ng b. 1.5 x1010 ng 6.6 x105 mg C. d. 8.4…

A: Mass of a substance is the calculation of the amount of the substance. Mass of a chemical compound…