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Oxygen or compressed air is never used to pressurize a refrigeration system because:

Khotyn asked Dec 19, 2024

by Khotyn

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If the reaction, 2 H2 + O2 --> 2 H2O, releases 483.6 kJ, then the standard enthalpy of formation of H2O = _______ kJ/mole. A. -483.6 B. +483.6 C. -241.8 D. +241.8

Nir Pengas asked Dec 19, 2024

by Nir Pengas

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What is the difference between endothermic and exothermic process in chemistry

Giorgi asked Dec 19, 2024

by Giorgi

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What mass of sodium nitrate is dissolved in 126 g of a solution that is 14.8% by mass of the compound?

GiladG asked Dec 19, 2024

by GiladG

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Pls helppp will a precipitate form if solutions of potassium sulfate, K2SO4 and barium nitrate , Ba(NO3)2 are combined

Rabin Lama Dong asked Dec 19, 2024

by Rabin Lama Dong

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Assuming the validity of Raoults law do the following calculations for benzene(1) toluene (2) system. a. Given xi - 0.33 and T-373.15 K, find y, and P. b. Given yi - 0.33 and T = 373.15 K, find xy and

Urbanaut asked Dec 19, 2024

by Urbanaut

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169k views

Chemistry reaction types quiz

Misbah Farooqi asked Dec 19, 2024

by Misbah Farooqi

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1 answer

3 votes

124k views

A typical pacemaker may contain 0.5 g of 238PuO₂ as a source of energy. Considering that all alpha particles are fully absorbed in the mass of plutonium oxide, what energy is absorbed during one second

Rhen asked Dec 19, 2024

by Rhen

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177k views

An agonist is a drug that produces the same type of response as the endogenous substance and an antagonist is a drug that will prevent the endogenous chemical from acting. A.True B.False

Leo Lerdorf asked Dec 19, 2024

by Leo Lerdorf

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1 answer

5 votes

129k views

Which of the following statements can correctly be made about Icedream mix? A. Icedream mix should be heated before serving to enhance its flavor. B. The mix should be combined with hot water for optimal

Alexander Shtang asked Dec 19, 2024

by Alexander Shtang

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170k views

Determine which of the following equations are either homogeneous, exact or neither. ydx = (y-xy²)dy xyy' + y' = 2x

Bleepmeh asked Dec 19, 2024

by Bleepmeh

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the combustion of methane CH₄ releases 890.4 kj/mol. of methane combusted. how much carbon dioxide in grams was produced in a reaction that released 3145 calories?

Josh Gust asked Dec 19, 2024

by Josh Gust

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3 votes

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MAIN IDEA: Bonds break and form during chemical reactions. 1.Label the reactants and products in the chemical reactions shown below. CH.-20, CO2 + 2H2O 160, -CH:0 6CO + 6HẠO

Leinir asked Dec 19, 2024

by Leinir

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What pair of element types is most likely to share valence electrons in a covalent bond?

Jalooc asked Dec 19, 2024

by Jalooc

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206k views

Order the following 5 atoms or ions according to increasing ionization energy. Smallest ionization energy → largest ionization energy 1) Li 2) Na 3) K 4) Rb 5) Cs

Fmark asked Dec 19, 2024

by Fmark

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CER: Momentum and Collisions - Preventing Concussions in Football Players and Woodpeckers Using the question below, develop a claim-evidence-reasoning to fully answer and explain every part of the phenomenon

Gal Dreiman asked Dec 19, 2024

by Gal Dreiman

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3.0k views

What 2 technologies does fracking leverage?

Allison asked Dec 19, 2024

by Allison

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3 votes

161k views

Which biologic is 25% Calcium phosphate and 75% Calcium Sulfate?

Sebastian Utz asked Dec 19, 2024

by Sebastian Utz

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5 votes

62.1k views

For an atom with five valence electrons and a negative three charge, which element is the smallest in its family? a) Nitrogen b) Oxygen c) Phosphorus d) Sulfur

Davur asked Dec 19, 2024

by Davur

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72.3k views

Consider the research question, "Does changing the volume of a gas affect the pressure?" Identify the controlled variable(s) that would need to be identified for the experiment.

Dominic Tancredi asked Dec 19, 2024

by Dominic Tancredi

7.8k points

1 answer

0 votes

82.6k views

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