Chemistry » Page 142

Chemistry

Alisa Owens

Which compounds are ionic and which are covalent?

• N2 • SiO2 • CaCl2

• CCl4 • AlCl 3 • LiBr

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Chemistry

Zack Arnold

The noble-gas notation for tin (Sn) will contain the symbol

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Chemistry

Murphy

What does the period number on the periodic table correspond to?

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Chemistry

Choi

Calculate the mass defectin amu for the formation of phosphorus-31. The mass of aphosphorus-31 nucleus is 30.973765 amu. The masses of a proton anda neutron are 1.00728 and 1.00866 amu, respectively.

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Chemistry

Beau Koch

Phenol red is a ph indicator routinely used to monitor the ph of solutions in laboratories. It is reddish-orange in neutral solutions, yellow in acidic solutions, and magenta in basic solutions. What color would a neutral, phenol-red containing solution turn if you started blowing your exhaled air into it using a straw?

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Chemistry

Aubrie Pitts

A substance which

melts/boils at a fixed temperature is a pure substance

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Chemistry

Carlos Bowen

What kind of elements are on the left side of the zig-zag line on the periodic table?

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Chemistry

Jaylon Quinn

What is the mass of 5 moles of Fe2O3?

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Chemistry

Ariella Compton

What is the rule of thumb for the activity trends of metals and nonmetals? Explain and give examples.

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Chemistry

Annabella Lawrence

Carbon atoms stick to catalyst surface in craking processes?

1 - sintring

2 - poising

3 - aging

4 - cocking or fouling

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Chemistry

Tianna Briggs

What is the oxidation number of Cl in chlorate ion ClO3?

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Chemistry

Hezekiah Klein

An atom with one valence electrons combines with an atom with seven valence electrons what is likely to happen to the atom with one valence

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Chemistry

Savion

How many Joules are there in 55 nutritional calories?

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Chemistry

Adrien Pruitt

What is the half-life (in seconds) of a zero-order reaction which has an initial reactant concentration of 0.834 m with a k value of 5.42 * 10-2 m/s?

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Chemistry

Kaylen

58. Explain why each successive ionization of an electron

requires a greater amount of energy. (6.3)

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