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Assume that a varies directly as b. When the value of a is 5, the value of bis 18. When the value of a is 22, what is the value of b? A. 6.11 B. 35 C. 79.2 D. 88

Seasick asked Dec 25, 2024

by Seasick

8.2k points

1 answer

2 votes

10.7k views

Calculate the potential of the cell for the reaction: Cu²⁺ (aq, 0.15M) + Zn(s) → Zn²⁺ (aq, 0.25M) + Cu(s). a) -0.70 volts b) 0.10 volts c) 0.55 volts d) -0.45 volts

Logan Bertram asked Dec 25, 2024

by Logan Bertram

7.8k points

1 answer

2 votes

86.1k views

In an NaF solution, the concentration of Na^+ is 4.0 X 10^-4 , M and the concentration of F^- is 4.0 X 10^-4 , textM. What is the value of K_sp ? A. 4.0 X 10^-8 B. 1.6 X 10^-7 C. 8.0 X 10^-8 D. 3.2 X 10^-7

Colmtuite asked Dec 25, 2024

by Colmtuite

7.5k points

1 answer

3 votes

11.9k views

Beer-Lambert's Law: The intensity of light emerging from a given solution is 50% of the intensity of the light incident on the solution. By how much will the transmitted intensity change if the thickness

Ccot asked Dec 25, 2024

by Ccot

8.6k points

1 answer

0 votes

80.5k views

Geothermal energy is produced when water touches _______________. A oil B hot rocks C biomass

Ashwin Krishnamurthy asked Dec 25, 2024

by Ashwin Krishnamurthy

7.8k points

1 answer

2 votes

142k views

How many milliliters of a 1..42M H₂SO₄ solution are needed to neutralize 95.5ml of a 0.336M KOH solution? 2 KOH(aq)+H₂SO₄(aq) → K₂SO₄(aq)+2 H₂O(l)

Snedecor asked Dec 25, 2024

by Snedecor

8.2k points

1 answer

2 votes

195k views

Suggest a scheme for the separation of constituents of the following mixture: sulfur + sand + sugar + iron filings. (A) Filtration followed by sublimation (B) Magnetic separation followed by distillation

Georgi Angelov asked Dec 25, 2024

by Georgi Angelov

7.7k points

1 answer

1 vote

80.9k views

If 21.1 g of aluminum react with excess HCl, how many moles of H₂ gas will be produced? a. 0.98 moles b. 1.21 moles c. 2.42 moles d. 3.63 moles

Parand asked Dec 25, 2024

by Parand

7.4k points

1 answer

5 votes

98.5k views

What is the density of CO₂ gas at STP?

Hugo Palma asked Dec 25, 2024

by Hugo Palma

8.3k points

1 answer

1 vote

83.6k views

The temperature dependence of the reaction enthalpy is given by Kirchhoff's law" A) True B) False C) Only for ideal gases D) Only for open systems

GuavaMantis asked Dec 25, 2024

by GuavaMantis

8.7k points

1 answer

3 votes

111k views

Select the representations that do not change the location of the point (6,110 ∘ ). a. (−6,290 ∘ ) b. (−6,250 ∘ ) c. (−6,−70 ∘ ) d. (6,−250 ∘ )

Willcritchlow asked Dec 25, 2024

by Willcritchlow

9.8k points

1 answer

3 votes

159k views

Synthesis means "putting together". Dehydration means "loss of water". explain why chemists refer to the joining of monosaccharide molecules to form disaccharides and polysaccharides dehydration synthesis.

Jishi asked Dec 25, 2024

by Jishi

8.3k points

1 answer

5 votes

27.3k views

How many moles are in 29.4 L of C2H6O gas at STP?

D M asked Dec 25, 2024

by D M

7.6k points

1 answer

1 vote

30.2k views

The oxidizing agent and reducing agent of zinc powder was reacted with copper (ii) sulphate solution

Lukeshek asked Dec 25, 2024

by Lukeshek

9.3k points

1 answer

4 votes

207k views

Mass of empty wrapper (0.22), mass of wrapper + unchewed gum (2.88), mass of unchewed gum only (2.66), mass of wrapper + chewed gum (1.29), mass of gum only (1.07), mass of sugar aspartame (1.59). These

Tomas Novotny asked Dec 25, 2024

by Tomas Novotny

8.2k points

1 answer

5 votes

462 views

You have another friend who likes to design jewelry. She has used copper to make a pair of earrings. She is concerned that they will oxidize quickly when people wear them due to sweat. After a discussion,

Marcos Meli asked Dec 25, 2024

by Marcos Meli

8.2k points

1 answer

2 votes

92.3k views

Consider water and glycerol (CH2(OH)CH(OH)CH2OH. The liquids water and glycerol _____ miscible in all proportions.

Amit Agrawal asked Dec 25, 2024

by Amit Agrawal

7.6k points

1 answer

2 votes

222k views

Which five elements do not follow the octet rule, and what is the name of the rule that they follow. Explain why those five elements don’t follow the octet rule

Alex Godofsky asked Dec 25, 2024

by Alex Godofsky

8.9k points

1 answer

1 vote

119k views

You have decided to apply a combination of Doubt 8E and Lancer 1.5E to your soybeans this year. If the recommended rates are 2 lbs. active ingredient for Doubt and 0.125 lb. active ingredient for Lancer

Yuri Zolotarev asked Dec 25, 2024

by Yuri Zolotarev

8.2k points

1 answer

1 vote

139k views

Fill in the blank with the most reasonable metric unit (m³, L, mL, m², cm², ha). My favorite coffee cup holds 225 ______ of coffee.

Johan Larson asked Dec 25, 2024

by Johan Larson

8.2k points

1 answer

3 votes

234k views

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