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Answer the following two in complete sentences. a. Mendeleev organized his periodic table of the elements by arranging elements in order of increasing atomic mass and grouping them based on their chemical

Hawxby asked Dec 18, 2024

by Hawxby

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What observation led Marie Curie to discover radium and polonium? a) The observation of radioactive decay b) The observation of glowing minerals c) The observation of strong radiation in pitchblende d)

Nick Zimmerman asked Dec 18, 2024

by Nick Zimmerman

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A fixed amount of O₂ gas is held in a container. if the volume of the gas is decreased at a constant temperature, describe how that would affect the average kinetic energy of the O₂ molecules, the root-mean-square

Nandokakimoto asked Dec 18, 2024

by Nandokakimoto

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Convert 1.30 tsp into tablespoon

Moaz Rashad asked Dec 18, 2024

by Moaz Rashad

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4 votes

57.4k views

T/F: the catalytic subunits of the complexes are known as CDKs

Ziwon asked Dec 18, 2024

by Ziwon

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4 votes

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Convert a pressure of 0.200 atm to the following units

Latkin asked Dec 18, 2024

by Latkin

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What is optical isomerism? What do you look for to determine whether an organic compound exhibits optical isomerism? 1-bromo-l-chloroethane is optically active, whereas 1-bromo-2-chloroethane is not optically

Andy Cochrane asked Dec 18, 2024

by Andy Cochrane

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4 votes

91.4k views

18.0 mL of a 0.334 M sodium phosphate solution reacts with 19.6 mL of a 0.155 M lead(II) nitrate solution. What mass of precipitate will form?

Zishan asked Dec 18, 2024

by Zishan

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4 votes

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Six teaspoons of extract are mixed with 240 mL of oral suspension. What is the final concentration of the suspension?

Demonking asked Dec 18, 2024

by Demonking

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1 answer

3 votes

231k views

my notes ask your teacher there are 73 small disks with one side blue and the other white in a box. when you start there are 52 blue sides up (and 21 white sides up). after you shake the box, you find

Aaron Wang asked Dec 18, 2024

by Aaron Wang

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4 votes

232k views

2) A solution was made by dissolving 755 g of Na₂SO4 in 53, 100 g of water. Calculate the morality, molality, and mole fraction of Na₂SO4. A) Molarity B) Molality c) Mole fraction

Non Communist Mao asked Dec 18, 2024

by Non Communist Mao

8.5k points

1 answer

5 votes

226k views

What is the charge on an atom with an equal number of protons and electrons? A. It depends on the type of atom. B. Neutral OC. Negative о D. Positive SUBMIT

Eel GhEEz asked Dec 18, 2024

by Eel GhEEz

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12.3k views

Compare the atomic radius of nitrogen (N) with that of antimony (Sb). A) Nitrogen has a larger atomic radius than antimony. B) Antimony has a larger atomic radius than nitrogen. C) Nitrogen and antimony

Kinet asked Dec 18, 2024

by Kinet

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9. In the following diagrams, elements are represented by X and Z, which form molecular compounds with one another. Which diagram represents a molecule that does not have a lineara molecular geometry?

Jsdodgers asked Dec 18, 2024

by Jsdodgers

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97.3k views

Atoms of an element tend to gain or lose electrons so that they will A. have the same number of protons as electrons B. become electrically neutral C. have the same number of outer orbital electrons as

Tbraun asked Dec 18, 2024

by Tbraun

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Consider the following thermochemical equation: C(s) + O₂(g) → CO₂(g) δh = −393 KJ CO(g) + ½O₂(g) → CO₂(g) δh = −294 KJ What is the enthalpy change for the following related thermochemical equation?

Ootero asked Dec 18, 2024

by Ootero

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92.0k views

Volume of 0.1 m ferrous oxalate solution required to react completely with 60 ml of 0.1 n acidified kmno4 solution is :

Hossein Hayati asked Dec 18, 2024

by Hossein Hayati

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1 answer

1 vote

63.6k views

As chief chemist at Superior Analytical Products (SAP) you must design an experiment to determine the density of an unknown liquid to three (3) significant figures. The density is of the order of 1 g/cm3.

Fabio Carpinato asked Dec 18, 2024

by Fabio Carpinato

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5 votes

171k views

How many atoms of oxygen are in a 0.78 mol sample of CaCO₃ ?

Fezzo asked Dec 18, 2024

by Fezzo

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148k views

In a laboratory setting, concentrations for solutions are measured in molarity. Calculate the molarity (mol/L) of NaClO in the bleach. a. 0.25 mol/L b. 0.50 mol/L c. 1.00 mol/L d. 1.50 mol/L

YvesLeBorg asked Dec 18, 2024

by YvesLeBorg

8.3k points

1 answer

4 votes

74.2k views

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