Classify these substances. More than one answer may apply in each case. N2 solution O homogeneous mixture O homogeneous mixture O element U pure substance solution compouikd O compound O element O pure substance O heterogeneous mixture O heterogeneous mixture N,0 Air (mostly N, and O,) O solution solution OO O

What is the percent by weight (w/w%) of sugar in soda? Assume the average mass of sugar in soda is 22.0 g and the total mass is 370.0 g.

In an experiment to measure the amount of citric acid in orange juice, O citric acid is the sample and orange juice is the analyte. O citric acid and orange juice are both samples. citric acid is the analyte and orange juice is the sample. citric acid and orange juice are both analytes.

66.40g CCl4 in molecules 43.29kg NAHCO3 in formula units 3.27x10^4g Na3PO4 in formula units (express your answer using for significant figures)

Using any data you can find in the ALEKS Data resource, calculate the equilibrium constant K at 25.0 °C for the following reaction. + 4 HCl (g) TiCl (g) + 2 H₂O(g) ― TiO2(s) Round your answer to 2 significant digits. K = ☐ ☐ ☑

A nutrition table lists apples with a potassium content of 4600 mg/pound. Assume an average apple is 75.0 g, the minimum daily intake for potassium for a healthy adult is 3500. mg per day. Calculate the number of apples per day to meet this requirement for a healthy adult. Assume 454 g = 1 pound. O 7.96 apples per day O 0.126 apples per day O 0.217 apples per day O 4.61 apples per day

wu.aleks.com/alekscgi/x/Isl.exe/1o_u-lgNslkr/J8P3)H-lQUHIQg6bJxmeSyVpHOEB1plef9xyC5Ca9QldFNDUsAt.. Tp O STATES OF MATTER 三D Calculating volume percent composition 0/5 A chemist prepares a mixture of ethanol and water at a temperature of 23.0 °C. He measures out 38.5 mL of ethanol and mixes it with 38.2 mL. He measures the volume of the solution after it is well mixed and finds that it is 73.6 mL. The density of ethanol is 079 g/mL and the density of water is 1.0 g/mL. Calculate the volume percent of ethanol in this solution. Be sure your answer has the right number of significant digits. db %(v/) 10 Ar Explanation Check 2022 MGraw Hill LLC All Rights Resurved Terms of Use Prvacy Center Accessibility 9:21 FM 378 /2022 DELL Esc F2 FS F6 F7 FB F10 F11 PrtScr Delete PgUp (PgDn F12 Insert Home End 23 $4 & Num Lock Backspace 7 E R Y P. G K Enter 5 *00

Which of the following statements is FALSE? The mass percentage of calcium in calcium phosphate is an extensive property. Mixtures can be separated into substances by physical methods. O Density is an intensive property. O Separations of a solid from a liquid by filtration is an example of a physical process. O The mass percentage of calcium in calcium phosphate is an extensive property.

Consider a mixture of three different gases: 1.90 g of argon (molecular mass = 39.948 g/mol), 3.10 g of neon (molecular mass = 20.180 g/mol), and 4.00 g of helium (molecular mass = 4.0026 g/mol). For this mixture, determine the percentage of the total number of atoms that corresponds to each of the components.

Valuable minerals (chemicals) can be obtained from ores, which are natually occuring mixtures. One ore cotains 38% magnetite, a mineral with the chemical formual Fe3O4. Fe3O4 contains 72.4% iron. What mass of ore (in tons) would contain 3.5 tons of iron? (Hint: your mass percent conversion factors can have units of tons)  *Mass percent values used in calculations should be written as conversion factors with units & labels