Chemistry » Page 15

Chemistry

Darius Kemp

What are the major function of the digestive system

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Chemistry

Mango

What is a substance made of identical atoms called?

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Chemistry

Braxton Kelly

The hydroxide ion concentration in pure water at 25ºC is NOT equal to

A. the hydronium ion concentration.

B. 1 X 10^-7 M.

C. the hydroxide concentration in a solution with a pH of 7.

D. 1 X 10^7 M.

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Chemistry

Lucille Powell

1. Why do rings stay shiny?

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Chemistry

Queen

Which technology collects data for weather, climate, and environmental monitoring from space?

radar

satellites

weather stations

weather balloons

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Chemistry

Joel Wilson

Why is it important to perform the reagent tests last?

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Chemistry

Owens

To what decimal place should each answer be rounded

how many significant figures does the rounded answer have

9 cm + 2.8 cm = 11.8 cm

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Chemistry

Michelle Carr

Wasser and water are examples of cognates.

True or False

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Chemistry

Guest

Write the net ionic equation, including the phases. 2hbr (aq) + ba (oh) 2 (aq) - - - > 2h2o (l) + babr2 (aq)

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Chemistry

Hope Hooper

A student needs to prepare 50.0 mL of a 1.30 M aqueous H2O2 solution. Calculate the volume of 5.0 M H2O2 stock solution that should be used to prepare the solution.

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Chemistry

Jonas Duarte

Which of the following is the best name for a compound made from nitrogen and oxygen? (N2O3) nitrogen oxide nitrogen II oxide nitrogen trioxide dinitrogen trioxide

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Chemistry

Blevins

Write the element symbol for the element with the abbreviated electron configuration [ne]3s23p2.

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Chemistry

Gavyn Avery

2. Describe in a step by step manner how you determined the identity of the two unknowns. Discuss both what you determined the unknowns to be and the method that you used to find them.

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Chemistry

Aileen Torres

Number of hydrogen atoms in NaC2HO4

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Chemistry

Doctor

Calculate the pH for an acid that has a [H+] of 5.8 x10^-11 M.

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