Chemistry » Page 32

Chemistry

Stephen Buck

One molecule of caffeine contains 8 atoms of carbon, 10 atoms of hydrogen, 2 atoms of oxygen, 4 atoms of nitrogen. write the formula for caffeine with the elements in the order they are given.

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Chemistry

Sammy Schneider

A piece of magnesium metal is heated in the presence of chlorine gas, and a reaction takes place. What compound will most likely

be produced?

A. Mg2C1

B. MgCl3

C. MgCl2

D. MgCI

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Chemistry

Figaro

What is the pressure of the gas in this mercury manometer if h = 81 mm and atmospheric pressure is 749 mmHg

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Chemistry

Collin Hampton

A microscope containing two or more lenses is an

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Chemistry

Barbara Reid

What word means the remains or imprint of once living organisms found in layer of rock

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Chemistry

Leland Mathews

A balance chemical reaction obeys the law of

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Chemistry

Skyler Stuart

Calculate how many kilograms are in 4 moles of Na2CO3?

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Chemistry

Mia Carrillo

210.0 °C a gas has a volume of 8.00 L. What is the volume of this gas at - 23.0°C?

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Chemistry

Hodge

What is atomic mass, atomic number, isotopes and how are all these terms related to each other?

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Chemistry

Shayna Moreno

Choose all of the statements that correctly describe the movement of particles when thermal energy is added or removed.

A) The addition of thermal energy to a gas will increase the chance the particles will collide.

B) The particles in a solid are not in motion.

C) As you remove thermal energy from a liquid, the particles will begin to slow down.

D) The addition of thermal energy to any phase of matter (solid, liquid, or gas) will decrease the chance of particle collisions.

E) It is possible to add enough thermal energy to break the bonds between particles and change the state of matter.

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Chemistry

Phoenix Clark

Which is a non renewable resource that is used to generate electrical energy

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Chemistry

Kayla Williams

How many grams of sulfur (S8S8) must be dissolved in 100.0 g naphthalene (C10H8C10H8) to make a 0.11 mm solution

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Chemistry

Dixie Henson

Mason compare the properties of two compounds magnesium oxide is an ionic compound and hydrogen peroxide is not an ionic compound there for both compounds most likely

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Chemistry

Santiago Anthony

Cisplatin is synthesized as follows: K2PtCl4 (aq) + 2NH3 (aq)  Pt (NH3) 2Cl2 (s) + 2KCl (aq) What mass of cisplatin can be made from 100. g of K2PtCl4 and sufficient NH3? What mass of KCl is also produced?

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Chemistry

Pretty Lady

What is the total number of protons in the nucleus of an atom of potassium-42?

(1) 15 (3) 39

(2) 19 (4) 42

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