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When ready for use, properly mixed polycarboxylate cement should appear:_____

Donnie H asked Oct 4, 2024

by Donnie H

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6. When 5.07 moles of iodine (1₂) are used in a reaction, how many grams were used?

January asked Oct 4, 2024

by January

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6. What is the specific heat capacity of a substance if 2.41x10* J are needed to change the temperature of 105.0 g of it from 25.0°C to 75.0°C?

Jan Marek asked Oct 4, 2024

by Jan Marek

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2 Mg + 02(g) --> 2 MgOWhat is the excess reagent if 2.2 g of Mg is reacted with 4.5 L of oxygen at STP?

Ivy asked Oct 4, 2024

by Ivy

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When coding pneumonia, should the organism responsible (if known) or the pneumonia be coded first?

Tomaz Fernandes asked Oct 4, 2024

by Tomaz Fernandes

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1 answer

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How many atoms are in 250amu of nitrogen? (recall sig figs) Option 1: 3,502 atoms Option 2: 3,500 atoms Option 3: 17 atoms Option 4: 18 atoms

Drew C asked Oct 4, 2024

by Drew C

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3 votes

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How could a student determine whether an unknown chemical is an acid? a) Test the hydrogen ion concentration in the sample. b) Measure the boiling point of the sample. c) Weigh the sample before and after

Dar Hamid asked Oct 4, 2024

by Dar Hamid

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When 2.996 grams of a hydrocarbon, CxHy, were burned, 9.401 grams of CO2 and 3.849 grams of H2O were produced. In a separate experiment, the molar mass of the compound was found to be 56.11 g/mol. Determine

DaleK asked Oct 4, 2024

by DaleK

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191k views

Oxygen gas is at a temperature of 40 at 2.3 liters. What is the volume-temperature relationship described by this statement? a) Boyle's Law b) Charles's Law c) Avogadro's Law d) Gay-Lussac's Law

Ilham asked Oct 4, 2024

by Ilham

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A 0.090 M solution of a monoprotic acid has a percent dissociation of 0.61%. Determine the acid ionization constant (Ka) for the acid. a) 1.48 × 10^-4 b) 3.17 × 10^-5 c) 2.33 × 10^-6 d) 1.03 × 10^-7 e)

Kyle Hotchkiss asked Oct 4, 2024

by Kyle Hotchkiss

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1 answer

3 votes

182k views

What is the mass percent of nitrogen in ammonium carbonate, (NH4)2CO3? a. 12.50% b. 14.58% c. 29.16% d. 49.95%

Francesco S asked Oct 4, 2024

by Francesco S

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4 votes

130k views

A ____ extinguisher should be used in areas with highly sensitive computer equipment because it will cause less damage to the equipment than other extinguishers

Sanyassh asked Oct 4, 2024

by Sanyassh

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1 answer

2 votes

79.0k views

What is the conjugate base of CH3CH2OH2+? a.CH2CH2O b.CH3CHO c.CH3CH2O d.CH3CH2OH2+ e.CH3CH2OH f.None of these choices is correct.

Nick Rupley asked Oct 4, 2024

by Nick Rupley

8.4k points

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1 vote

44.8k views

the gas in a 225.0 ml piston experiences a change in pressure from 1.00 atm to 2.90 atm. what is the new volume (in ml) assuming the moles of gas and temperature are held constant? 7 7 . 5 9

DominikAngerer asked Oct 4, 2024

by DominikAngerer

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1 vote

6.8k views

ZEFG and ZGFH are a linear pair, m ZEFG = 4n + 19, and m ZGFH = 3n + 21. What are m ZEFG and m ZGFH? A. m ZEFG = 3n + 21, m ZGFH = 4n + 19 B. m ZEFG = 4n + 19, m ZGFH = 3n + 21 C. m ZEFG = 4n + 21, m ZGFH

Complexity asked Oct 4, 2024

by Complexity

8.2k points

1 answer

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102k views

Hey can someone help me fill out these blanks

Vorpyg asked Oct 4, 2024

by Vorpyg

8.6k points

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132k views

Convert 2.55 moles of calcium chloride to grams. CaCl2

Dan Morrow asked Oct 4, 2024

by Dan Morrow

8.7k points

1 answer

4 votes

127k views

ON THE QUESTION ABOVE, SWITCH YOUR ANSWERS UP A LITTLE SO THEY AREN'T MINE, SO YOUR ANSWERS WON'T BE PLAGIARIZED. a) False b) True

Bret Copeland asked Oct 4, 2024

by Bret Copeland

7.6k points

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Which elements in which period (s) do not follow the normal electron filling patterns? 1) Group 1 elements 2) Group 2 elements 3) Transition metals 4) Noble gases

Mic asked Oct 4, 2024

by Mic

7.6k points

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2 votes

127k views

In a calorimetry experiment, an unknown metal with a mass of 27.4 g that has been in heated to a temperature of 94.0 °C is placed in a coffee cup calorimeter containing 79.8 g of water initially at a temperature

Teshguru asked Oct 4, 2024

by Teshguru

8.3k points

1 answer

1 vote

179k views

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