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Silicon has three naturally occurring isotopes. Look at the information given and predict whether the average atomic mass would be closer to Si-28, Si-29, or Si-30. Give reasons for your answer. A) The

Anna Brenden asked Dec 22, 2024

by Anna Brenden

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Where are the smallest, lightest hydrocarbons captured in a distillation tower? a. At the top of the tower b. Along the floor of the tower c. Near the bottom of the tower d. Near the middle of the tower

STenyaK asked Dec 22, 2024

by STenyaK

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2 votes

200k views

Where does the photon come from for dental x-rays?

BVtp asked Dec 22, 2024

by BVtp

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1 answer

0 votes

157k views

How long does it take for the sun to go around the Earth?

Seema asked Dec 22, 2024

by Seema

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1 answer

4 votes

158k views

I am trying to make sense of these two graphs. They appear to have similar axes, yet display different curves. Please let me know if this understanding is correct: In the top image (x-axis = "Reaction

Varun asked Dec 22, 2024

by Varun

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1 answer

1 vote

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Element ................ is essential for the synthesis of thyroxine.A. Iodine B. Magnesium C.Manganes D.Zinc

Gusti Arya asked Dec 22, 2024

by Gusti Arya

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1 answer

5 votes

15.6k views

Which would have the largest atomic size: O²⁻, F⁻, F, Na⁺, Mg²⁺? And why?

AlexNe asked Dec 22, 2024

by AlexNe

8.5k points

1 answer

4 votes

89.2k views

A thin copper wire of length l metre increases in length by 2% when heated through 10°C. What is the percentage increase in area when a square copper sheet of length l metre is heated through 10°C? (1)

Kritzikratzi asked Dec 22, 2024

by Kritzikratzi

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if the rearrangement of pinacol is successful, what changes would be seen in the ir spectrum for the product compared to the starting material?

Ivan Chaer asked Dec 22, 2024

by Ivan Chaer

8.3k points

1 answer

1 vote

28.0k views

What is the density of water in kg/L? (Dimensional analysis, the density of water is 1 g/mL)

Niksnut asked Dec 22, 2024

by Niksnut

7.1k points

2 answers

3 votes

93.0k views

Why does pentane have a higher boiling point than dimethylpropane? A) Pentane has a larger molecular size and greater surface area. B) Pentane has stronger London dispersion forces than dimethylpropane.

Morocklo asked Dec 22, 2024

by Morocklo

8.1k points

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4 votes

199k views

The atomic masses of 6/3Li and 7/3Li are 6.0151 amu and _______. a) 7.0151 amu b) 6.999 amu c) 6.015 amu d) 7.015 amu

Menno Van Dijk asked Dec 22, 2024

by Menno Van Dijk

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__ C5H9O __ O2 → __ CO2 __ H2O type of reaction

Shivam Yadav asked Dec 22, 2024

by Shivam Yadav

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1 answer

5 votes

224k views

Which of the following ions has the same electronic configuration as argon? a. K2+ b. Ca+ c. both a. and b. d. neither a. nor

Terco asked Dec 22, 2024

by Terco

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3 votes

109k views

Which of the following has a larger mass: 2 mole of water 2 mole of carbon dioxide 2 mole of ozone

Pankaj Cheema asked Dec 22, 2024

by Pankaj Cheema

7.6k points

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1 vote

19.7k views

THC (tetrahydrocannabinol) and CBD (cannabidiol) Are two of more than 100 other chemicals collectively called what

Wfarr asked Dec 22, 2024

by Wfarr

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2 votes

225k views

1) N2(g) + 3H2(g) 25000kPa. 2NH3(g) What is this in translation form??

Chris McClellan asked Dec 22, 2024

by Chris McClellan

7.8k points

1 answer

4 votes

107k views

Which statement accurately describes the atoms of a specific element?A.A tin, Sn, atom contains 118 electrons outside the nucleus and 50 neutrons inside the nucleusB.A zinc, Zn, atom contains 65 electrons

Mauro Valvano asked Dec 22, 2024

by Mauro Valvano

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3 votes

217k views

Express 1,670,000,000 in scientific notation.

Hamza Fatmi asked Dec 22, 2024

by Hamza Fatmi

8.2k points

2 answers

5 votes

71.5k views

Write the formula unit equation for this re- action occuring in water: Barium perchloate and sodium sulfate are mixed to form sodium perchlorate and barium sulfate. 1. Na2SO4(aq) + Ba(ClO)2(aq) → 2 NaClO(aq)

Shanebonham asked Dec 22, 2024

by Shanebonham

8.0k points

1 answer

4 votes

175k views

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