2 years ago

Please help me out with this question

2 answers:

3 0

C. Electrical conductivity, that means it can pass electricity through wires if needed, think of your phone charger as an example

Allisa [31]2 years ago

3 0

Answer:

c hope this helps

Explanation:

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What is the molarity of a solution containing 5 moles of HCl in 2.5 L of solution? Be sure to include the formula for calculatin

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Answer:

$\boxed{\text{2 mol/L}}$

Step-by-step explanation:

$c = \dfrac{ \text{moles} }{ \text{litres}}\\\\c = \dfrac{n }{V }$

Data:

n = 5 mol

V = 2.5 L

Calculation:

$c = \dfrac{ \text{5 mol} }{\text{2.5 L}} = \text{2 mol/L}$

The molar concentration of the solution is $\boxed{\textbf{2 mol/L}}$ .

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3 years ago

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2 years ago

A rectangular poster is /4 yard wide and / yard tall. What is its area? Solve this problem any way you choose

tatuchka [14]

Answer:

Area of rectangular poster = $\frac{3}{16}$ yard²

Explanation:

P.S - The exact question is -

Given - A rectangular poster is $\frac{1}{4}$ yard wide and $\frac{3}{4}$ yard tall.

To find - What is its area ?

Proof -

We know that ,

The area of rectangle = Length × Breadth

Here,

Given that,

Length of rectangle = $\frac{3}{4}$ yard

Breadth of rectangle = $\frac{1}{4}$ yard

∴ we get

Area of rectangular poster = $\frac{3}{4}$ × $\frac{1}{4}$ yard²

= $\frac{3}{16}$ yard²

⇒Area of rectangular poster = $\frac{3}{16}$ yard²

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