Science

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1. Math

   Which of the following pairs could represent a function? Select three that apply. A: {(2,-5),(4,-5), (6,2), (8,3)}** B: {(-1,5),(3,5),(6,5), (9,5)}** C: {(3,-4),(5,2), (3,8), (6,7)} D: {(0,3), (4,2),(-1,7), (0,3)} E:

2. Chemistry

   How many molecules are in 2.10 mol CO2? A. 2.53 x 10^24 molecules B. 3.79 x 10^24 molecules C. 3.49 x 10^24 molecules D. 1.26 x 10^24 molecules*** I think it is D, but can someone check my work? Amount of mols x Avogadro's number

3. Chemistry

   Which of these compounds contain elements that do not follow the octet rule? Explain. (Note: All the numbers are superscripts) A. NF3 B. OF2 C. H2S D. NI3 My understanding of the octet rule..is that it is not satisified in

4. chem

   The fact that ice is less dense than water is related to the fact that ____. the molecular structure of ice is much less orderly than that of water the molecules of ice are held to each other by covalent bonding ice has a

1. EdTech

   1) what is an example of bias in media A. A website that presents a controversial opinion as though it were fact. B. A television news program that presents both sides of a particular issue**** C. A podcast expressing an authors

2. social studies

   1. Why was the Declaration of Independence important select all that apply 2. What is the relationship between the Declaration of Independence and the Bill of Rights 3. Which ideas from the Declaration of Independence support

3. Science

   Q1: Why do scientist use models? A.) Scientist use models to learn about things that are too small, too late, or too complex to observe directly. B.) Scientist use models because doing so is always part of the scientific method.

4. (1-13) Chemistry - Science

   Which of the following effects will make the ratio (PV) / (nRT) less than 1 for a real gas? a) The gas molecules are large enough to occupy a substantial amount of space. b) A large number of molecules have speeds greater than the

1. Chemistry of Life

   Which statement is true about water molecules? The oxygen atom has a negative charge. The hydrogen atoms do not share electrons. Water molecules move randomly around each other. Water molecules cannot dissolve many substances.

2. Social Studies

   Which of the following were important achievements of the Kushites? Select all that apply. A. the defeat of the Assyrian army B. the invention of one of the world's first alphabets C. construction of the largest pyramids in the

3. History

   Which islands were important in the island-hopping campaign? (Select all that apply) Saipan Guam Guadalcanal Iwo Jima A and D?

4. Chemistry

   What happens when there is an increase in temperature for a reaction rate? Select all that apply. It increases the chance that the reaction will be endothermic It increases the percentage of collisions that result in a reaction It

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