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Aneli [31]
3 years ago
15

What is the reducing agent in the reaction below?

Chemistry
1 answer:
trapecia [35]3 years ago
8 0
Al    is  the  reducing  agent.That    is  answer  B  is  the  above  answer
  Al  acts  as  a  strong  reducing  agent.  It  reduces  crO3  to  form cr  while  Al  is  oxidized  to  Al2O3.    Al is  capable  to  reduce  cr  since  Al  is  higher  in   reactivity  series  than  cr.
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When combined, two gases have a pressure of 75.54 atm. If one has has a pressure of 2.90 atm, what is the pressure of the second
nataly862011 [7]

Answer:

The pressureof the secondone is 2.5 atm

Explanation:

hope this helps

4 0
3 years ago
NaCl has a mc020-1.jpgHfus = 30.2 kJ/mol. What is the mass of a sample of NaCl that needs 732.6 kJ of heat to melt completely?
lilavasa [31]

Answer: The mass of the sample will be 1417.7 grams.

Explanation:

We are given:

\Delta H_{fusion}=30.2kJ/mol

This means that 1 mole of NaCl has an enthalpy of fusion of 30.2 kJ

1 mole of NaCl has a mass of 58.44 grams.

So, 30.2 kJ of heat is require for a mass 58.44 grams of NaCl

So, 732.6 kJ of heat will be required for = \frac{58.44g}{30.2kJ}\times 732.6 kJ = 1417.65 grams of NaCl.

Hence, the mass of NaCl sample will be 1417.7 grams.

5 0
4 years ago
Read 2 more answers
A liquid medicine is labeled as having 5% active ingredient, by volume. If
enyata [817]

Answer:

2.5 mL

Explanation:

Step 1: Given data

  • Concentration of the active ingredient (C): 5% v/v
  • Volume of the medicine (V): 50 mL

Step 2: Calculate the amount of the active ingredient in the medicine

The concentration of the active ingredient is 5% v/v, that is, there are 5 mL of the active ingredient per 100 mL of the medicine. The volume of the active ingredient is 50 mL of the medicine is:

50 mL Med × 5 mL AI/100 mL Med = 2.5 mL AI

4 0
3 years ago
When each of the following is heated to 50 degrees Celsius and the temperature is held constant for five minutes, which one unde
NISA [10]
Ice cream will have a physical change because you can re freeze it and it will still be ice cream
7 0
3 years ago
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The label on a ready-to-eat cereal box indicates that 1 cup contains 32 grams of carbohydrate, 4 grams of protein, and 2 grams o
eduard

Energy given by carbohydrates present in one cup =32 g * \frac{4 kcal}{1 g} = 128 kcal

Energy given by proteins present in one cup = 4 g * \frac{4 kcal}{1 g} = 16 kcal

Energy given by fat in one cup = 2 g * \frac{9 kcal}{1 g} = 18 kcal

Total energy in one cup of cereal box = 128 kcal + 16 kcal + 18 kcal = 162 kcal

Energy present in two cups = [tex] 2 cups * \frac{162 kcal}{1 cup} *

= 324 kcal

6 0
4 years ago
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