Recent questions in Chemistry

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If 25.0 mL of 15M nitric acid is diluted to 125 mL, what is the concentration of the new solution?

Maschina asked Oct 6, 2024

by Maschina

7.9k points

1 answer

5 votes

209k views

How long will a radioactive isotope whose half-life T is years take for its activity to reduce to 1/8 of its initial value? a) 3T b) 2T c) 4T d) T/2

Macedo asked Oct 6, 2024

by Macedo

8.8k points

1 answer

4 votes

138k views

You need 6,500 pounds of 11.5?

Tucuxi asked Oct 6, 2024

by Tucuxi

8.4k points

1 answer

1 vote

26.0k views

What type of fire can be put out safely with water? A B C wood grease electrical D gasoline

Timbroder asked Oct 6, 2024

by Timbroder

8.3k points

1 answer

3 votes

187k views

An example of a colloid solution would be Haemaccel. a) True b) False

Milanbalazs asked Oct 6, 2024

by Milanbalazs

7.4k points

1 answer

5 votes

67.9k views

Predict the common charges of the ions of tin. Explain your reasoning in terms of electron configuration Also, predict the highest possible charge of a zirconium ion. Explain your reasoning in terms of

Cjrieck asked Oct 6, 2024

by Cjrieck

7.4k points

1 answer

5 votes

200k views

What is the temperature (in Kelvin) of 3.00 mol of nitrogen gas that occupies 32.0 L at 1.17 atm of pressure? • Round your answer to the nearest whole number. Provide your answer below: K

Hderanga asked Oct 6, 2024

by Hderanga

8.6k points

2 answers

3 votes

71.7k views

What is the mass of the solid?

Monu asked Oct 6, 2024

by Monu

8.0k points

1 answer

4 votes

221k views

How was PrP^Sc found to be different than PrP^c?

Marco Faustinelli asked Oct 6, 2024

by Marco Faustinelli

8.8k points

1 answer

1 vote

98.3k views

The helical structure of certain proteins, such as wool, is part of the protein's A) primary structure. B) secondary structure. C) tertiary structure. D) quaternary structure.

Harin asked Oct 6, 2024

by Harin

8.3k points

1 answer

5 votes

68.3k views

0.8 Molar NaOH is added to 30 mL of HCl and the volume of base added vs. pH is graphed. What molarity is the HCl solution?

Altherat asked Oct 6, 2024

by Altherat

8.2k points

1 answer

3 votes

57.2k views

What products are formed as an immediate result of the fusion of two protons in the p-p chain reaction a) Helium-3 and positron b) Helium-4 and neutrino c) Deuterium and gamma rays d) Tritium and electron

Poojathorat asked Oct 6, 2024

by Poojathorat

8.3k points

1 answer

2 votes

81.3k views

Calculate the number of oxygen atoms in a 70.0 g sample of iron(iii) oxide fe2o3. Be sure your answer has a unit symbol if necessary, and round it to 3 significant digits.

Ghoul asked Oct 6, 2024

by Ghoul

8.2k points

1 answer

3 votes

209k views

If I have 340mL of a 0.5M NaBr solution, what will the concentration be if I add enough water to make 1000mL of the solution?

Jordan Davies asked Oct 6, 2024

by Jordan Davies

8.2k points

1 answer

0 votes

16.7k views

What is oh in final solution prepared by mixing 20 ml of 0.05 m hcl with 30 mlof .10m barrium oxide

Akhil V Suku asked Oct 6, 2024

by Akhil V Suku

7.9k points

1 answer

1 vote

74.8k views

In the methyl-phosphate binary switch, serine phosphorlyation and lysine acetylation has what effect?

Rofer asked Oct 6, 2024

by Rofer

8.2k points

1 answer

2 votes

68.5k views

2 NaCl + O₂ -> OCI₂ + 2 Na If she does the reaction with 56.44 grams of O₂, how many grams of Na are created? answer choices, 162.2, 81.10, or 20.28

Havakok asked Oct 6, 2024

by Havakok

8.1k points

1 answer

1 vote

93.1k views

Draw each atom in the molecule separately. oxygen gas, O2

Stephen Young asked Oct 6, 2024

by Stephen Young

8.5k points

1 answer

0 votes

186k views

Tetraphosphorus hexaoxide ( â„³ = 219.9 g/mol) is formed by the reaction of phosphorus with oxygen gas. p4(s) + 3O₂(g) → p4o6(s). If a mixture of 75.3 g of phosphorus and 38.7 g of oxygen produce 43.3

Sami Hult asked Oct 6, 2024

by Sami Hult

8.7k points

1 answer

0 votes

5.3k views

Estimate the ethalpy change of the reaction H-H+Cl-Cl

Nemanja Grabovac asked Oct 6, 2024

by Nemanja Grabovac

8.0k points

1 answer

0 votes

120k views

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