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How many moles are in 6.95 x 10^24 atoms of sodium?

Volkan Sonmez asked Oct 9, 2024

by Volkan Sonmez

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One part of the problem-solving strategy for balancing chemical equations is ""starting with the most complicated molecule."" What if you started with a different molecule? Could you still eventually balance

Rico Herwig asked Oct 9, 2024

by Rico Herwig

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Which block of elements is non-reducing?

Yogini asked Oct 9, 2024

by Yogini

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Determine the limiting reactant in each of the following mixtures of reactants: a. 2.0 mol of Fe and 6.0 mol of O2 b. 5.0 mol of Fe and 4.0 mol of O2 c. 16.0 mol of Fe and 20.0 mol of O2

Codism asked Oct 9, 2024

by Codism

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3 votes

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Which of the following BEST describes why personal protective equipment (PPE) should never be altered? A. May create confusion at incident scene B. May cause misidentification with Incident Command C.

Aliaxander asked Oct 9, 2024

by Aliaxander

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3 votes

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Which of the following is a property of an ionic compound? options: A. brittle B. blue C. low boiling point D. low melting point

Truezplaya asked Oct 9, 2024

by Truezplaya

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194k views

If 15 grams of copper (ii) chloride react with 20 grams of sodium nitrate, how many grams of sodium chloride can be formed?

Kgm asked Oct 9, 2024

by Kgm

9.2k points

1 answer

5 votes

221k views

How to solve long division?

Niccord asked Oct 9, 2024

by Niccord

8.3k points

1 answer

3 votes

230k views

The element ________ makes up the chemical backbone of most large organic molecules on planet Earth A) Nitrogen B) Carbon C) Oxygen D) Hydrogen

Edward Lim asked Oct 9, 2024

by Edward Lim

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3 votes

220k views

What is the weight % of Sulfur in crude oil? a) Less than 1% b) Around 5% c) Approximately 10% d) More than 20%

Diego Mijelshon asked Oct 9, 2024

by Diego Mijelshon

8.3k points

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1 vote

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If the equilibrium potential for K⁺ is -58 mV and +58 mV for Na⁺, which is true the ions at a membrane potential of -58mV? (assume that the membrane is permeable to both ions) A) Na⁺ should diffuse into

Elecash asked Oct 9, 2024

by Elecash

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5 votes

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The wavelength of the four Balmer series lines for hydrogen are found to be 410.3, 434.2, 486.3, and 656.5 nm. What average percentage difference is found between these wavelength numbers and those predicted

Mathewbutler asked Oct 9, 2024

by Mathewbutler

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3 votes

228k views

Which of the following brain chemicals decreases during affection? A: Levels of dopamine B: Levels of cortisol C: Levels of oxytocin D: All of the above decrease E: None of the above decrease

Bilal Usean asked Oct 9, 2024

by Bilal Usean

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Why is venting an "exempt refrigerant" legal?

Keron asked Oct 9, 2024

by Keron

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1 vote

167k views

Given the unbalanced equation (Reaction 1) and the molecular weight of calcium citrate (498.5 g/mol), if 15 nmol of calcium oxalate is mixed with 15 nmol of potassium citrate, what is the approximate theoretical

Hamid Sarfraz asked Oct 9, 2024

by Hamid Sarfraz

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3 votes

102k views

Quiz Question Index Which of the following is acidic and can make food tart in taste? Possible Answers: O Vinegar Lemon juice A and B None of the above Prev Next D SafeCheck® Canadian Food Safety Certification

Shubhendu asked Oct 9, 2024

by Shubhendu

7.6k points

1 answer

4 votes

137k views

What formula would you use to identify the new substance formed in Picture 2? a. (H_2O) b. (CO_2) c. (NH_3) d. (NaCl)

Cethy asked Oct 9, 2024

by Cethy

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1 vote

224k views

Helium is a gas used to fill balloons.it is present in the air in very small quantitie.diffusion can be used to separate it from the air. air at 1000 degrees Celsius is on one side of a porous barrier.

Sharanu asked Oct 9, 2024

by Sharanu

8.5k points

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4 votes

22.3k views

Which species is reduced in this reaction? Mg(s) + 2 HCl(aq) MgCl₂(aq) + H₂(g) a) Mg b) Cl- in HCl c) H+ in HCl d) H₂

Victoria Ruiz asked Oct 9, 2024

by Victoria Ruiz

8.2k points

1 answer

5 votes

225k views

PRINCIPAL QUANTUM NUMBER has symbol n and it tells us the energy level or the size of the orbital. The higher the number the larger the orbital is. Lets use Si as example:

Stephen Booher asked Oct 9, 2024

by Stephen Booher

7.6k points

1 answer

5 votes

10.2k views

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