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What is the final concentration of the solution produced when 225.5 mL of a 0.09988-M solution of Na₂CO₃ is allowed to evaporate until the solution volume is reduced to 45.00 mL? a) 0.499 M b) 0.248 M

Jim Bolla asked Oct 3, 2024

by Jim Bolla

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A contaminated solution is 1.0x10⁻⁶ M each for Pb²⁺ and Ag⁺ ions. If the carbonate level is raised to 0.00013 M, what will happen? (Ksp of PbCO3=7.4x10⁻¹⁴; Ag₂CO₃ = 8.1x10⁻¹²) A. only silver ions will

Yogesh Wadhwa asked Oct 3, 2024

by Yogesh Wadhwa

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0. 323 moles of a gas is contained at a pressure of 0. 900 atm and a temperature of -8. 0°C. a. What is the temperature in Kelvin? K b. Which value for the ideal gas constant (R) should be used in this

Samuelnj asked Oct 3, 2024

by Samuelnj

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113k views

To calculate the heat capacity of a calorimeter during the combustion of benzoic acid, what needs to be determined? A. Enthalpy change B. Temperature change C. Heat of combustion D. Specific heat capacity

Franco Coronel asked Oct 3, 2024

by Franco Coronel

8.9k points

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156k views

6. The acid strength of the oxyacids of chlorine is as follows: HCIO4 > HCIO3 > HCIO2 > HCIO Which statement best explains this trend? (A) The electrons in the H-O bond are pulled away from the hydrogen

Mol asked Oct 3, 2024

by Mol

8.5k points

1 answer

3 votes

52.3k views

The recommended daily dosage for an infant is 0.035 to 0.06 mg/kg/day in divided doses q8h. The safe dosage range for an infant weighing 6 1/2 lb is _______________.

Sanchay asked Oct 3, 2024

by Sanchay

9.0k points

1 answer

3 votes

160k views

What is the average speed of a bicyclist who travels 18,325 meters in 3,565 seconds

Stas BZ asked Oct 3, 2024

by Stas BZ

7.8k points

2 answers

5 votes

76.9k views

How does 250 mL of water compare to 500 mL of water?

Burnsys asked Oct 3, 2024

by Burnsys

8.1k points

1 answer

0 votes

73.6k views

Bio Ch 3 The electron transport chain makes ATP in the ______________

Naga asked Oct 3, 2024

by Naga

9.0k points

1 answer

2 votes

32.3k views

Read the following chemical formula: C6H₁2O6. How many hydrogen atoms are in the formula? 12 4 6

JeeBee asked Oct 3, 2024

by JeeBee

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1 answer

1 vote

204k views

To which compound classes could the unknown compound with the molecular formula C5H12O2 belong? Check all that apply. A) Alcohol B) Ketone C) Carboxylic Acid D) Ester E) Aldehyde

Basic Block asked Oct 3, 2024

by Basic Block

7.5k points

1 answer

2 votes

184k views

Enter a chemical equation for HNO₃(aq) showing how it is an acid according to the Arrhenius definition. Express your answer as a chemical equation including phases.

RoyM asked Oct 3, 2024

by RoyM

8.5k points

1 answer

2 votes

145k views

Explain why the chemical reaction inside the ice packs stops after 2 hours

MarkG asked Oct 3, 2024

by MarkG

8.2k points

1 answer

2 votes

71.0k views

Outermost electronic configuration of a group 13 element, E, is 4s²,4p¹ . The electronic configuration of an element of p- block period – five placed diagonally to element , E is: A. [Xe]5d¹⁰6s²6p² B.

Florian Winter asked Oct 3, 2024

by Florian Winter

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1 answer

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86.5k views

A certain rifle bullet has a mass of 9.33 g. Calculate the de Broglie wavelength of the bullet traveling at 1769 miles per hour. Physical constants can be found here. λ =

Fdreger asked Oct 3, 2024

by Fdreger

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1 answer

2 votes

224k views

A solution of an acid in water has a hydronium ion concentration of 2.0 × 10-6 M. What is the concentration of hydroxide ion at 25 °C? If you need to write scientific notation answer type it using "e"

TIMEX asked Oct 3, 2024

by TIMEX

7.9k points

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5 votes

25.7k views

How to build an Iced 151 NRG? A) Add ice, syrup, and soft serve mix B) Pour hot water, add sugar, and shake C) Blend fruit, add milk, and stir D) Mix powders, add water, and freeze

Alockrem asked Oct 3, 2024

by Alockrem

7.8k points

1 answer

2 votes

205k views

What is the concentration of OH⁻ in a 0.083 M NaOH solution? 1) 8.30 × 10¹² M 2) 7 M 3) 1.21 × 10⁻¹³ M 4) 0.083 M 5) 8.30 × 10⁻¹⁶ M

Metacontent asked Oct 3, 2024

by Metacontent

8.7k points

1 answer

2 votes

126k views

If the volume of the reaction vessel in part b is 0.500 L, what amount of Br2 (in moles) is formed during the first 15.0 s of the reaction

Maricor asked Oct 3, 2024

by Maricor

8.1k points

1 answer

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25.0k views

Which of the following is within the normal range for pH of urine? A) 0-1. B) 1-3. C) 4.5-8. D) 9-11. E) 12-14.

Miniscule asked Oct 3, 2024

by Miniscule

8.4k points

1 answer

1 vote

93.7k views

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