Answer:
1.3 × 10⁻¹¹ M
Explanation:
We are going to do 4 successive dilutions. In each dilution, we will apply the dilution rule.
C₁.V₁=C₂.V₂
where,
C₁ and V₁ are concentration and volume of the initial state
C₂ and V₂ are concentration and volume of the final state
<u>First dilution</u>
C₁ = 3.1 × 10⁻⁵ M V₁ = 1.00 mL C₂ = ? V₂ = 40.00mL

<u>Second dilution</u>
C₁ = 7.8 × 10⁻⁷ M V₁ = 1.00 mL C₂ = ? V₂ = 40.00mL

<u>Third dilution</u>
C₁ = 2.0 × 10⁻⁸ M V₁ = 1.00 mL C₂ = ? V₂ = 40.00mL

<u>Fourth dilution</u>
C₁ = 5.0 × 10⁻¹⁰ M V₁ = 1.00 mL C₂ = ? V₂ = 40.00mL

Answer:
that the water is blue because of the way water absorbs light, the way particles in the water scatter light, and also because some of the blue light from the sky is reflected
<span>sunspots, hope this helps!!!!</span>
Answer:The green growing on the penny of copper and the rust forming on the nail of iron are chemical changes. Boiling away salt water, scraping iron filings from a mixture of sand with a magnet, and breaking a rock with a hammer, are physical changes.
Explanation:
Answer:
a
Explanation:
global warming causing the icebergs to melt which rises water