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What is C₂O₄²⁻: a) A neutral element b) A molecule c) An ion d) None of the above

Guannan He asked Dec 26, 2024

by Guannan He

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226k views

Two of the first known elements were O carbon, sulfur O gold, uranium Ooxygen, iron O graphite, diamond and

Paul Annetts asked Dec 26, 2024

by Paul Annetts

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1 answer

3 votes

51.7k views

Draw the lewis structure for bro3 -. check all that apply. a. a br atom has two double-bonded o atoms each with two lone pairs and a single-bonded o atom with three lone pairs. b. the structure is in brackets

Jakub Juszczak asked Dec 26, 2024

by Jakub Juszczak

7.5k points

1 answer

1 vote

233k views

What mass of HCl is contained in 45.0 mL of an aqueous HCl solution that has a density of 1.19g cm ^ - 3 and contains 37.21% HCl by mass?

GerryMulligan asked Dec 26, 2024

by GerryMulligan

7.4k points

1 answer

3 votes

109k views

At STP, how many grams of mg are required to produce 35 ml of H₂ in the reaction: Mg(s) + 2HCL (aq) → H₂ (g) + Mgcl₂ (aq) ?

David Pierre asked Dec 26, 2024

by David Pierre

8.0k points

1 answer

3 votes

62.8k views

Determine the maximum mass of the lamp that the cord system can support so that no single cord develops a tension exceeding 420 N.

Modest asked Dec 26, 2024

by Modest

8.0k points

1 answer

2 votes

229k views

What is the main difference between a substance going through a physical change and one going through a chemical reaction? I'm kind of concerned since I can't think of an idea right now

Sharvari Gc asked Dec 26, 2024

by Sharvari Gc

8.1k points

1 answer

3 votes

163k views

What is the second most abundant anion in the ECF?

Dennis Vennink asked Dec 26, 2024

by Dennis Vennink

7.1k points

1 answer

5 votes

151k views

At 90 °c you dissolved 10 g of kcl in 100.9 g of h2o. Is this solution saturated or unsaturated? How do you know?

Bernard Hymmen asked Dec 26, 2024

by Bernard Hymmen

8.0k points

1 answer

4 votes

1.7k views

As we move closer to the nucleus of an atom , each preceding orbit of electrons represent a ? a. Lower energy level b. Valence energy level c. Higher energy level d. Average energy level

Bozhidarc asked Dec 26, 2024

by Bozhidarc

7.8k points

1 answer

2 votes

3.3k views

Our teacher has taught us today about optical isomers . And at the end given a formula for finding number of optical isomers of a symmetrical molecule( n is number of chiral atoms and the n is odd for

Lomaxx asked Dec 26, 2024

by Lomaxx

8.3k points

1 answer

4 votes

102k views

The tonicity of a solution is not important when it is administered subcutaneously. True. False.

Amrit Trivedi asked Dec 26, 2024

by Amrit Trivedi

9.0k points

1 answer

0 votes

29.0k views

In 20 ml of Tc99m eluate, there are 30 ug of Al3+ present. can this eluate be used for reconstituting kits for patient injection? a. yes. b. no.

Douglaslps asked Dec 26, 2024

by Douglaslps

8.1k points

1 answer

1 vote

34.0k views

The chemical category called "alcohol" includes which of the following substances? A) isopropanol B) ethanol C) methanol D) All of the answers are correct.

Pilcrow asked Dec 26, 2024

by Pilcrow

7.9k points

1 answer

5 votes

172k views

Radio waves are typically used for communication because they have such low energy, and thus won't hurt living objects when they come in contact with them. A radio wave has a wavelength of 0.344 m. What

Gurfuffle asked Dec 26, 2024

by Gurfuffle

7.7k points

1 answer

0 votes

55.1k views

The pKa of a weak acid, HA is 4.80. The pK of a weak base, BOH, is 4.78. The pH of an aqueous solution of the corresponding salt BA will be: A 7.01 B 9.22 C 9.58 D 4.79

Yingying asked Dec 26, 2024

by Yingying

8.4k points

1 answer

1 vote

117k views

What is N for CIO3-, the chlorate ion?

Jonas Libbe asked Dec 26, 2024

by Jonas Libbe

8.5k points

1 answer

5 votes

60.7k views

How to clean rust off stainless steel

Buszmen asked Dec 26, 2024

by Buszmen

8.3k points

1 answer

2 votes

32.1k views

Write the letter of the expression in the second column that is most closely related to the following statement: The total pressure of a mixture of gases is equal to the sum of the partial pressures of

Eebbesen asked Dec 26, 2024

by Eebbesen

7.8k points

1 answer

1 vote

205k views

Concerning these questions, would I multiplying by the mass of the element or would I just use 6.02 x 10^23. 1. If you have 5.62 moles of Be how many atoms of Be do you have? 2. If you have 7.89×10^23

Daleen asked Dec 26, 2024

by Daleen

8.1k points

1 answer

1 vote

97.5k views

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