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Heat absorbed or released by a substance can be calculated with the equation _____________. q = m × Cs × ∆T q = m × Cs ÷ ∆T q = m + Cs + ∆T q = m + Cs

Toshihiko asked Oct 4, 2024

by Toshihiko

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Starting with the following equation, Fe₂O₃(s) + Al(s) → Fe(l) + Al₂O₃(s), calculate the moles of Fe₂O₃ that will be required to produce 645 grams of Fe. a) 0.387 moles b) 1.94 moles c) 3.88 moles d) 7.

Mnj asked Oct 4, 2024

by Mnj

7.9k points

1 answer

1 vote

95.5k views

ABG levels are pH 7.57 PaCO2 25 PaO2 98 HCO3- 25 BE 0 How would you correct it?

Vrutin Rathod asked Oct 4, 2024

by Vrutin Rathod

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1 answer

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What is the major disadvantage of straight vacuum forming using deep cavities? A) Uneven Heating B) High Energy Consumption C) Poor Material Distribution D) Long Cycle Times

Nmarti asked Oct 4, 2024

by Nmarti

7.7k points

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5 votes

131k views

"How does one carry out a serial dilution in which the concentration is divided by 10 at each interval? e.g. you start with a standard solution of 1% concentration and you create test tubes of 9cm^3

Martijno asked Oct 4, 2024

by Martijno

8.2k points

1 answer

3 votes

182k views

If there are four fluorine atoms and one sulfur atom in a compound, what is its chemical formula?

Jagmitg asked Oct 4, 2024

by Jagmitg

8.4k points

1 answer

5 votes

119k views

Identical charge, similar ionic radius, extensive substitution. These are all criteria for what? A. Polymorphism B. Solid solution C. Ionic bonding D. Crystal lattice

Tomeka asked Oct 4, 2024

by Tomeka

8.5k points

1 answer

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123k views

The molar mass of a metal carbonate (MCO₃) can be obtained by adding more hcl acid that reacts with all carbonates and back-titrating the remaining acid with naoh. write the chemical formulas for these

Rashema asked Oct 4, 2024

by Rashema

7.3k points

1 answer

4 votes

127k views

K Beaction H₂SO4+Za=26804+H₂ of paper. Then complete the for you. Reactants Reactants Products Fes Products

Daniel Kullmann asked Oct 4, 2024

by Daniel Kullmann

9.0k points

1 answer

4 votes

129k views

How many alkenes react with BH₃ in hydroboration?

Metasoarous asked Oct 4, 2024

by Metasoarous

7.6k points

1 answer

5 votes

196k views

Which of the following is NOT true regarding the primary standard? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b с d It must be of high purity.

Ildar Musin asked Oct 4, 2024

by Ildar Musin

8.5k points

1 answer

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199k views

Why do these protons appear at 6.9 and 6.93 ppm, at lower ppm value? I assumed it was due to the anisotropic effect, specifically I thought the circulating (pi) electrons induced a magnetic field which

Kuryaki asked Oct 4, 2024

by Kuryaki

7.9k points

1 answer

1 vote

106k views

Now calculate the molarity of the solution, giving your answer to the correct number of significant digits. a. Use the Avogadro's number b. μltiply the moles by the molecular weight c. Divide the moles

Tabassum asked Oct 4, 2024

by Tabassum

7.5k points

1 answer

5 votes

63.0k views

Compound A (C₆H₁₂; reacts with 1 molar equivalent of H₂ over a Pd catalyst) gives the product(s) below on oxidative cleavage with KMnO₄ in acidic solution. Propose a structure for A. Compound A ➝ CH₃CH₂CO₂H

Nhisyam asked Oct 4, 2024

by Nhisyam

8.9k points

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3 votes

235k views

A 1.00-L solution contains 2.00×10^-4 M Cu(NO3)2 and 1.40×10^-3 M ethylenediamine (en). The Kf for Cu(en)22+ is 1.00 × 10^20. What is the concentration of Cu2+(aq) in the solution?

Xyphoid asked Oct 4, 2024

by Xyphoid

8.1k points

1 answer

0 votes

222k views

When you dilute something, do you change the number of moles of material?

Gerard Brull asked Oct 4, 2024

by Gerard Brull

8.2k points

1 answer

2 votes

147k views

Among the following species: Ag+, Al³+, Ag and Al, the oxidizing agents are: a) Ag+ and Al b) Ag+ and Al³+ c) Ag and Al³+ d) Ag and Al explain your answer

Rohan Patil asked Oct 4, 2024

by Rohan Patil

8.1k points

1 answer

3 votes

130k views

An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz). Combustion of 5.50 g of this compound produced 8.07 g of carbon dioxide and 3.30 g of water. a) C₃H₆O b) C₄H₈O₂ c) C₂H₄O d) C₅H₁₀O

Rollen asked Oct 4, 2024

by Rollen

8.3k points

1 answer

4 votes

156k views

Atomic mass of Al = 27. * 2 points If Al2D3 48.04 X1023 molecule has mass 800 g. Calculate atomic mass of element D. 1)12.56 2) 46.25 3) 100.25 4) 15.42

Jon Phenow asked Oct 4, 2024

by Jon Phenow

8.4k points

1 answer

2 votes

58.5k views

What mass of Ni3(PO4)2 is needed to prepare 155.13 mL of a solution of 2.150 M Ni3(PO4)2 ? 122.08 g O A. 38.62 g OB. 49.73 g C. 119.23 g OD. 87.67 g O E.

Fyrkov asked Oct 4, 2024

by Fyrkov

8.3k points

1 answer

4 votes

183 views

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