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18. Melanin can be demonstrated with the: a. Prussian blue reaction b. rhodanine method c. Schmorl technique d. von Kossa technique

Matias Agelvis asked Oct 11, 2024

by Matias Agelvis

9.0k points

1 answer

3 votes

72.9k views

As the temperature of a sample of H2O(l) decreases, the average kinetic energy of its molecules will: __________ A decrease B increase C remain the same

Nathan Bush asked Oct 11, 2024

by Nathan Bush

9.0k points

1 answer

2 votes

54.6k views

As a change of state takes place, heat _______ and temperature _______. A) increase, stay the same B) stay the same, stay the same C) stay the same, change D) increase, increase

NLR asked Oct 11, 2024

by NLR

7.9k points

1 answer

2 votes

232k views

Organize the four elements largest to smallest radius K,F, Na,CI

Jon Rea asked Oct 11, 2024

by Jon Rea

8.5k points

1 answer

1 vote

119k views

For the reaction C+ 2H2 → CH4, how many moles of carbon are needed to make 193.2 grams of methane, CH4 ? Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer

Jason Graham asked Oct 11, 2024

by Jason Graham

7.6k points

1 answer

3 votes

20.0k views

What does the following ABG show? PaO_2: 13 kPa (98 mmHg) pH: 7.25 PaCO_2: 3.5 kPa (26 mmHg) HCO_3-: 13 mmol/L BE: - 4 (A) Respiratory acidosis (B) Respiratory alkalosis (C) Metabolic acidosis (D) Metabolic

Marieann asked Oct 11, 2024

by Marieann

7.5k points

1 answer

5 votes

13.5k views

8.34 x 1023 formula units MgCl₂= g MgCl₂(answer should be a whole number)

Pushya asked Oct 11, 2024

by Pushya

8.1k points

1 answer

2 votes

97.1k views

From 2HI (or 4H for Full Time) to 4HL____

Sam Carlton asked Oct 11, 2024

by Sam Carlton

7.4k points

1 answer

1 vote

69.4k views

decreasing the size of substance in a chemical reaction increase its surface area and therefore increase its rates of reaction TRUE or FALSE

Leoj asked Oct 11, 2024

by Leoj

7.5k points

1 answer

3 votes

93.0k views

Use the energy diagrams of the two reactions to answer the questions. Reaction A Reaction B 150 150 Energy 100 (kJ/mol) 100 Energy (kJ/mol) 50 50 0 0 Reaction progress Reaction progress What is the change

Hjaved asked Oct 11, 2024

by Hjaved

8.6k points

2 answers

2 votes

124k views

How are elements organized on the periodic table? OA. by electron number OB. by atomic number OC. alphabetically

BomberMan asked Oct 11, 2024

by BomberMan

8.4k points

2 answers

2 votes

48.8k views

Determine the false statement regarding electrochemistry. a. the purpose of an inert electrode is to facilitate the transfer of electrons. b. electrons travel towards the cathode in a galvanic cell. c.

Mcepl asked Oct 11, 2024

by Mcepl

7.9k points

1 answer

5 votes

92.1k views

PLEASE ANSWER ASAP 1. How many atoms are present in 8.500 mole of chlorine atoms? 2. Determine the mass (g) of 15.50 mole of oxygen. 3. Determine the number of moles of helium in 1.953 x 108 g of helium.

TheCarver asked Oct 11, 2024

by TheCarver

8.6k points

1 answer

2 votes

103k views

How many grams of product, AIBr3, are produced? 2AI+3BR2 ——> 2AIBr3 54 g+ 474 g ——>

Undefitied asked Oct 11, 2024

by Undefitied

7.7k points

1 answer

5 votes

43.5k views

What is the general concept of limiting and excess reactants and why do they matter when it comes to stoichiometry

Tnissi asked Oct 11, 2024

by Tnissi

8.2k points

1 answer

0 votes

48.1k views

Which of the following are chemical properties of matter? A) mass B) volume C) density D) flammability

Solalito asked Oct 11, 2024

by Solalito

7.9k points

1 answer

4 votes

129k views

Since they move against the concentration gradient during active transport, what is used to move substances?

Anurag Srivastava asked Oct 11, 2024

by Anurag Srivastava

7.8k points

1 answer

5 votes

13.5k views

Many chemical and toxic substances used in modern industry are flammable or combustible. true/false

Mikael Jumppanen asked Oct 11, 2024

by Mikael Jumppanen

8.8k points

1 answer

0 votes

211k views

What dissolves faster; one big sugar cube, or several small sugar cubes? Assume total volume is equal.

Hind Forsum asked Oct 11, 2024

by Hind Forsum

7.9k points

1 answer

1 vote

38.8k views

Why does spilled gasoline evaporate more rapidly on a hot day than on a cold day? a) Because the increased temperature lowers the vapor pressure of gasoline b) Because the increased temperature increases

Salomon BRYS asked Oct 11, 2024

by Salomon BRYS

8.4k points

1 answer

0 votes

43.6k views

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