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Chemistry

Janet Oliver

Blank is the theory that explains how large pieces of earths outermost layer move and change shape

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Chemistry

Allen Reynolds

Describe the energy transformation that occurs in a clock

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Chemistry

Victoria Hicks

Electronegativity tends to tends to increase from left to right across a row., becasue

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Chemistry

Valentina Acevedo

Which formula equation shows a reversible reaction? 2 upper N a plus upper F subscript 2 right arrow 2 upper N a upper F. Upper C a upper C upper O subscript 3 right arrow upper C a upper O plus upper C upper O subscript 2. Upper N upper H subscript 4 upper C l (s) right and left arrows stacked above each other upper N upper H subscript 3 (g) plus upper H upper C l (g). 2 upper H subscript 2 upper O subscript 2 (a q) right arrow with upper P t above it 2 upper H subscript 2 upper O (l) plus upper 2 subscript 2 (g).

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Chemistry

Woofie

Sprite: When mixed with red cabbage water, resulting solution turned red.

Watermelon juice: When mixed with red cabbage water, resulting solution turned pink/purple.

Egg whites: When mixed with red cabbage water, resulting solution turned green.

Which substance (s) is likely to neutralize an acid?

A) Egg whites

B) Watermelon juice

C) Sprite and watermelon juice

D) Egg whites and watermelon juice

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Chemistry

Ernesto Crosby

Uranium - 235 is used in nuclear fission. determine the number of protons and neutrons in uranium - 235

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Chemistry

Sherleen

Calculation of Percent Composition

Analysis of a 12.04-g sample of a liquid compound composed of carbon, hydrogen, and nitrogen showed it to contain 7.34 g C, 1.85 g H, and 2.85 g N. What is the percent composition of this compound?

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Chemistry

Mills

A substance is tested with litmus paper. the blue litmus paper remains blue while the red litmus paper remains red. what can you conclude about the substance?

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Chemistry

Kasen Castillo

The density of iron = 7.86 g/cm^3, what is the volume of 150g of iron

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Chemistry

Ben Andrade

What alkyl halide forms the following alkene as the only product in an elimination reaction?

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Chemistry

Brewster

How many grams of Mg are needed to react completely with 3.80 L of a 2.50 M HF solution?

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Chemistry

Eli Lara

What is the ratio of carbon, hydrogen, and oxygen in most carbohydrates?

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Chemistry

Amina

Radium-223 is a radioactive isotope with a half-life of 11.4 days. how long (in days) will it be before 87.5% of the sample has decayed?

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Chemistry

Terry Nichols

Which kind of reaction is shown below?

2H2O2 → 2H2O + O2

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Chemistry

Cristal Spears

Phosphorus has the molecular formula p4, and sulfur has the molecular formula s8. how many grams of phosphorus contain the same number of molecules as 7.88 g of sulfur?

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