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3 years ago

"Under which conditions do you expect helium gas to deviate most from ideal behavior?

1 answer:

3 0

The conditions do you expect helium gas to deviate most from ideal behavior is at <span>100 K and 1 atm. The answer is letter A. An ideal gas has a very low pressure and very low temperature.</span>

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Does an aqueous solution of each of the following conduct an electric current? Explain.

yan [13]

Also, when potassium sulphate is dissolved or melted in water, it conducts electricity very strongly.

<h3> What is the magnetic effect of current?</h3>

The magnetic effect Another result that might be observed is the formation of a magnetic field surrounding the conductor. It is possible to detect a current flowing in a conductor. When a compass is placed near a wire delivering a relatively high direct current, the compass needle is seen to deflect.

A current's magnetic field is useful in a variety of applications.

learn more about electric current refer

brainly.com/question/1100341

#SPJ4

5 0

2 years ago

A machine has a mechanical advantage of 0.6. What force should be applied to the machine to make it apply 600 N to an object?

Vinil7 [7]

Answer:

1000N is needed to be applied.

Explanation:

Machines make doing work easier. They allow us use small effort to carry out work on huge amount of load.

The mechanical advantage of a machine;

(M.A) =load/effort

M.A = 0.6

Load =600N

effort =?

0.6 = 600/effort

effort = 600/0.6

effort = 1000N

8 0

3 years ago

The Case of the Missing Mass: Students have completed the experiment of combining vinegar and baking soda. They notice that thei

atroni [7]

Answer:.

Explanation:

5 0

3 years ago

What is the pOH of a<br> 2.6 x 10-6 M H+ solution?

melomori [17]

Answer:

Approximately $8.41$ (assuming that the solution is at $\rm 25^\circ C$ , under which $K_{\rm w} = 10^{-14}$ .)

Explanation:

Let ${\rm [H^{+}]}$ and ${\rm [OH^{-}]}$ denote the concentration of $\rm H^{+}$ and $\rm OH^{-}$ respectively.

Let $K_{\rm w}$ denote the self-ionization constant of water. The exact value of $K_{\rm w}\!$ depends on the temperature of the solution. $K_{\rm w} =10^{-14}$ at $\rm 25^\circ C$ .

The product of ${\rm [H^{+}]}$ and ${\rm [OH^{-}]}$ in a solution (with $\rm M$ , or moles per liter, as the unit) is supposed to be equal to the $K_{\rm w}$ value of that solution at the corresponding temperature. In other words:

${\rm [H^{+}]} \cdot {\rm [OH^{-}]} = K_{\rm w}$ .

Rearrange to obtain an expression for ${[\rm OH^{-}]}$ :

$\begin{aligned}{\rm [OH^{-}]} &= \frac{K_{\rm w}}{[\rm H^{+}]}\end{aligned}$ .

Assume that the solution in this question is at $\rm 25^\circ C$ (for which $K_{\rm w} =10^{-14}$ .) For this solution:

$\begin{aligned}{\rm [OH^{-}]} &= \frac{K_{\rm w}}{[\rm H^{+}]} \\ &= \frac{10^{-14}}{2.6 \times 10^{-6}}\approx 3.85\times 10^{-9}\; \rm M\end{aligned}$ .

Hence, the $\rm pOH$ of this solution would be:

$\begin{aligned}\rm pOH &= -\log_{10}{\rm [OH^{-}]} \\&\approx -\log_{10} (3.85 \times 10^{-9}) \approx 8.41 \end{aligned}$ .

3 0

3 years ago

How many moles of potassium hydroxide are needed to completely neutralize 1.56 mol phosphoric acid?

frez [133]

3KOH + H₃PO₄ ----> K₃PO₄ + 3H₂O
3 moles 1 mole

3 moles KOH ------ 1 mole H₃PO₄
X moles KOH ------ 1,56 mol
X = 3×1,56
X = 4,68 moles of KOH

:)

7 0

3 years ago