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When aqeous solutions of ZnCl and CuSO₄ are used separately with AgNO₃ as a reagent, what ion is present in each solution? Option a: Zn²+, Cu²+ Option b: Cl⁻, SO4²- Option c: Zn²+, NO3⁻ Option d: Cl⁻,

BonDaviD asked Oct 6, 2024

by BonDaviD

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1 answer

3 votes

151k views

How many moles of K2SO4 are in 45 g of K2SO4? O 0.82 moles O 7.8 x 103 moles O 1.333 moles 0.26 moles 0.019 moles

Walery Strauch asked Oct 6, 2024

by Walery Strauch

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1 answer

1 vote

162k views

The threshold frequency

Sank asked Oct 6, 2024

by Sank

8.5k points

1 answer

2 votes

785 views

Write the balanced molecular equation for the reaction: (A) 2K₂C₂O₄ + Ba(OH)₂ → 2KOH + BaC₂O₄ (B) K₂C₂O₄ + Ba(OH)₂ → 2KOH + BaC₂O₄ (C) K₂C₂O₄ + 2Ba(OH)₂ → 4KOH + BaC₂O₄ (D) 2K₂C₂O₄ + 2Ba(OH)₂ → 4KOH +

Hasib Tarafder asked Oct 6, 2024

by Hasib Tarafder

7.8k points

1 answer

0 votes

93.3k views

Describe one advantage and one disadvantage of using spectroscopic analysis to quantify the amount of a chemical substance in a certain product.

Mickel Sierra asked Oct 6, 2024

by Mickel Sierra

7.9k points

1 answer

1 vote

60.0k views

A compound is known to have an empirical formula of ch and a molar mass of 78.11 g/mol. What is its molecular formula?

David Wilkinson asked Oct 6, 2024

by David Wilkinson

7.0k points

1 answer

2 votes

214k views

Which parts of Dalton's atomic theory are no longer true today? A) Atoms are indivisible. B) Atoms of the same element are identical. C) Atoms combine in simple whole number ratios. D) Atoms have no internal

Salsaman asked Oct 6, 2024

by Salsaman

7.6k points

1 answer

0 votes

96.6k views

Select the term that doesn't fit the group: Smoke, Homogeneous, Heterogeneous, Solution, Colloid, Suspension a) Smoke b) Solution c) Colloid d) Heterogeneous

Bradleygriffith asked Oct 6, 2024

by Bradleygriffith

8.8k points

2 answers

3 votes

207k views

What is meant by the term zero oxygen balance

Hvb asked Oct 6, 2024

by Hvb

8.4k points

1 answer

0 votes

193k views

Can riboflavin form a hydrogen bond with water? 1) Yes 2) No

Shimi Shimson asked Oct 6, 2024

by Shimi Shimson

8.0k points

1 answer

1 vote

78.9k views

Proteins have segments of their polypeptide chain/chains that can be repeatedly coiled or folded into helix and pleated structures, respectively. This is due to hydrogen bonds between partially charged

Akshay Katariya asked Oct 6, 2024

by Akshay Katariya

8.9k points

1 answer

1 vote

214k views

Shouldn't ethylene should be more acidic? It has a C=C bond, so the density of electron cloud would be higher in the areas of the double bond while the C-H single bond have way less electron density. This,

Bill Barnhill asked Oct 6, 2024

by Bill Barnhill

8.5k points

1 answer

3 votes

57.7k views

How does this neutralization differ from hydroxide neutralization? A) thio relaxers are more effective at fully straightening the hair. B) the neutralization of thio relaxers involves oxidation. C) cosmetologists

Max Starkenburg asked Oct 6, 2024

by Max Starkenburg

8.5k points

1 answer

0 votes

190k views

What is the molar equilibrium constant for a chemical reaction, and how is it calculated. What differs it from the regular equilibrium constant (Keq)

Steve V asked Oct 6, 2024

by Steve V

8.0k points

1 answer

4 votes

69.3k views

Light from a laser pointer goes through a window composed of crown glass, which has an index of refraction of 1. 523. What is the speed of the light while it is in the window glass?.

Ilya Tsuryev asked Oct 6, 2024

by Ilya Tsuryev

8.2k points

1 answer

5 votes

232k views

What is the purpose of setting a critical limit in the cooking process of TCS food?

Jbll asked Oct 6, 2024

by Jbll

7.1k points

1 answer

4 votes

197k views

The concentration, in parts per million, of a type of antibiotic in a human's bloodstream after h hours can be modeled by the polynomial -0.06h² + 2h + 4 = a(h). What is the concentration of the antibiotic

ArunKumar Kandasamy asked Oct 6, 2024

by ArunKumar Kandasamy

8.5k points

1 answer

2 votes

86.2k views

a student is investigating various types of matter based on a simplified model created in science class. the student examines the salad dressing bottle, noticing that the oily component and the vinegar

Mukhammad Ali asked Oct 6, 2024

by Mukhammad Ali

7.9k points

1 answer

1 vote

6.7k views

If DNA of a particular species was analyzed and it was found that it contains 27 percent A, what would be the percentage of C? a) 27% b) 23% c) 23% d) 46%

Webberpuma asked Oct 6, 2024

by Webberpuma

7.8k points

1 answer

5 votes

68.7k views

At what temperature (in Kelvin) would 4.0 moles of hydrogen gas in a 100 liter container exert a pressure of 10.00 atmospheres?

Sam Cristall asked Oct 6, 2024

by Sam Cristall

7.9k points

1 answer

3 votes

89.7k views

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