Pizza is an example of a homogeneous mixture.

Sara is making an omelet. She cracks open 6 eggs and places them in a bowl. She adds some milk, salt, and pepper to the eggs and

Sunny_sXe [5.5K]

Answer: Well then I guess Sara is having a good breakfast

Explanation: what was the point of this question?

6 0

3 years ago

chemist adds of a M iron(III) bromide solution to a reaction flask. Calculate the mass in grams of iron(III) bromide the chemist

Sav [38]

The question is incomplete, here is the complete question:

A chemist adds 370.0 mL of a 2.25 M iron(III) bromide solution to a reaction flask. Calculate the mass in grams of iron(III) bromide the chemist has added to the flask. Round your answer to 3 significant digits

Answer: The mass of iron (III) bromide is 246. grams

Explanation:

To calculate the mass of solute, we use the equation used to calculate the molarity of solution:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

We are given:

Molarity of solution = 2.25 M

Molar mass of iron (III) bromide = 295.6 g/mol

Volume of solution = 370.0 mL

Putting values in above equation, we get:

$2.25M=\frac{\text{Mass of solute}\times 1000}{295.6\times 370.0}\\\\\text{Mass of solute}=\frac{2.25\times 295.6\times 370.0}{1000}=246.1g$

Hence, the mass of iron (III) bromide is 246. grams

4 0

3 years ago

Which of the following elements has the lowest electronegativity value?

andrezito [222]

Answer:

i think the answer is lettee e- Na.

3 0

3 years ago

13. Write the following balanced reactions using cell notation. Use platinum as an inert electrode, if needed. (a) Mg(s) + Ni2+(

sp2606 [1]

Answer:

A) Mg ₍s₎ | Mg²⁺₍aq₎║Ni²⁺₍aq₎ | Ni₍s₎

B) Cu₍s₎ | Cu²⁺₍aq₎║ Ag⁺ | Ag⁰₍s₎

C) Cu₍s₎ | Cu²⁺₍aq₎║ Ag⁺ | Ag⁰₍s₎

D) Pt₍s₎ | CuNO₃₍ aq₎ , Cu(NO₃)₂₍aq₎ ║ Au(NO₃)₃₍aq₎ | Au₍s₎

Explanation:

A) Mg + Ni²⁺ → Mg²⁺ + Ni

Mg⁰→ Mg²⁺ + 2e⁻ oxidation anode

Ni²⁺ + 2e⁻ → Ni⁰ reduction cathode

Mg ₍s₎ | Mg²⁺₍aq₎║Ni²⁺₍aq₎ | Ni₍s₎

anode salt bridge cathode

B) 2 Ag⁺₍aq₎ + Cu₍s₎ → Cu²⁺₍aq₎ + 2 Ag₍s₎

2 Ag⁺ + 2e⁻ → 2 Ag⁰ cathode

Cu → Cu²⁺ + 2e⁻ anode

Cu₍s₎ | Cu²⁺₍aq₎║ Ag⁺ | Ag⁰₍s₎

anode salt bridge cathode

C) Mn ₍s₎ + Sn(NO₃)₂ ₍aq₎ → Mn (NO₃)₂ ₍aq₎ + Au₍s₎

Mn⁰ → Mn²⁺+ 2e⁻ anode

Sn²⁺ + 2e⁻ → Sn⁰₍s₎ cathode

Mn₍s₎ | Mn(NO₃)₂ ₍aq₎ ║ Sn(NO₃)₂ ₍aq₎ | Sn₍s₎

anode salt bridge cathode

D) 3CuNO₃₍ aq₎ + Au(NO₃)₃₍aq₎ → 3Cu(NO₃)₂₍aq₎ + Au₍s₎

3Cu⁺ → 3Cu²⁺ + 3e⁻ anode

Au³⁺ + 3e⁻ → Au⁰ cathode

Pt₍s₎ | CuNO₃₍ aq₎ , Cu(NO₃)₂₍aq₎ ║ Au(NO₃)₃₍aq₎ | Au₍s₎

anode salt bridge cathode

Semi-reactions are noted to determine oxidation and reduction. The oxidation reaction occurs at the anode and the reduction reaction at the cathode. In the case of subsections a, b, c the electrodes may be the solid metal, while in the case d the species are in an accusative medium and require the platinum electrode.

5 0

3 years ago

Food molecules contain biochemical energy which is made available by

pshichka [43]

What Food molecules contain biochemical energy which is made available?By cellular respiration

7 0

3 years ago