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3 years ago

What is the overall reaction order for this rate law: rate= k[a][b]?

Chemistry

1 answer:

SpyIntel [72]3 years ago

7 0

The overall reaction order is 2, because you add the orders of the individual components, which each are 1.

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How would you find the volume of a regular object and irregular object?

Sveta_85 [38]

Answer:

You can find the volume of an irregular object by immersing it in water in a beaker or other container with volume markings, and by seeing how much the level goes up. Or by multiplying all the sides of the container. #markasbrainliest

6 0

3 years ago

A 7.300 gram sample of aluminum was quantitatively combined with a sample of selenium to form a compound. The compound weighed 3

adelina 88 [10]

Answer:

The empirical formula is Al2Se3

Explanation:

Step 1: Data given

Mass of the sample of aluminium = 7.300 grams

Mass of the compound = 39.35 grams

Molar mass of aluminium = 26.98 g/mol

Molar mass of selenium = 78.96 g/mol

Step 2: Calculate mass of selenium

Mass of selenium = mass of compound - mass of aluminium

Mass of selenium = 39.35 - 7.3 = 32.05 grams

Step 3: Calculate moles of Al

Moles Al = Mass Al/ Molar mass Al

Moles Al = 7.300 grams / 26.98 g/mol

Moles Al = 0.2706 moles

Step 4: Calculate moles of Se

Moles Se = Mass Se / Molar mass Se

Moles Se =32.05 g / 78.96 g/mol

Moles Se = 0.4059 moles

Step 5: Divide through the smallest amount of mol

Aluminium: 0.2706 / 0.2706 = 1

Selenium: 0.4059/0.2706 = 1.5

This means for each mol aluminium, we have 1.5 moles of selenium

For each 2 moles of aluminium, we have 3 moles of selenium

The empirical formula is Al2Se3

This is aluminium(III) selenide.

8 0

3 years ago

In a salt water solution, what is the water?

antoniya [11.8K]

A solute, hope it helps

7 0

3 years ago

Read 2 more answers

To measure the amount of citric acid (C3 H, oHn a certain candy, an analytical chemist dissolves a 16.00 g sample of the candy i

Naily [24]

Answer:

Acid-Base reaction (the reactanct acting as a base is NaOH)

mass percent = 1.93%

Explanation:

The reaction that takes place is:

C₃H₅O(CO₂H)₃(aq) + 3OH⁻ (aq) → C₃H₅O(CO₂)₃⁻³(aq) + 3H₂O(l)

This is a acid-base reaction, with the citric acid acting as the acid and the sodium hydroxide NaOH acting as the base.

We calculate the moles of citric acid using the information from the titration:

0.0142 L * 0.340 M * $\frac{1molAcid}{3molOH^{-}}$ = 1.609x10⁻³ mol citric acid

Now we convert moles to mass using the acid's molecular weight (192.13g/mol):

1.609x10⁻³ mol citric acid * 192.13g/mol = 0.3092 g citric acid

Finally we calculate the mass percent of citric acid in the sample:

0.3092 g / 16.00 g * 100% = 1.93%

3 0

3 years ago

HURRY PLEASE!!!!

Stells [14]

Answer:

B. Convection

Explanation:

Convection is results of transfer heat.

5 0

3 years ago