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3 years ago

15

Tide occur in ocean but not in lake why

1 answer:

kirza4 [7]3 years ago

7 0

Answer:

Because while our lakes are Great, they're comparatively much smaller than oceans. And the gravitational pull isn't strong.

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A potassium chloride solution that also contains 5% (m/V) dextrose is administered intravenously to treat some forms of malnutri

alexgriva [62]

ci=oncentration of pottasium = 3.5 * 10^-2 mol/litre

3 0

3 years ago

Read 2 more answers

The volume of a sample of gas measured at 27 °C is 10.0 dm . What is the temperature when the volume is reduced to 9.0 dm at the

Mars2501 [29]

Answer:

$T_2=24.3^{\circ} C$

Explanation:

Given that,

The volume of a sample of gas measured at 27 °C is 10.0 dm.

We need to find the temperature when the volume is reduced to 9.0 dm at the same pressure.

According Charles law,

$\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}$

Where, T₂ is new temperature

$T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{9\times 27}{10}\\\\T_2=24.3^{\circ} C$

So, the new temperature is $24.3^{\circ} C$ .

5 0

3 years ago

Nitrogen dioxide and water react to form nitric acid and nitrogen monoxide, like this:

posledela

Answer: The value of the equilibrium constant Kc for this reaction is 3.72

Explanation:

Equilibrium concentration of $HNO_3$ = $\frac{15.5g}{63g/mol\times 9.5L}=0.026M$

Equilibrium concentration of $NO$ = $\frac{16.6g}{30g/mol\times 9.5L}=0.058M$

Equilibrium concentration of $NO_2$ = $\frac{22.5g}{46g/mol\times 9.5L}=0.051M$

Equilibrium concentration of $H_2O$ = $\frac{189.0g}{18g/mol\times 9.5L}=1.10M$

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_c$

For the given chemical reaction:

$2HNO_3(aq)+NO(g)\rightarrow 3NO_2(g)+H_2O(l)$

The expression for $K_c$ is written as:

$K_c=\frac{[NO_2]^3\times [H_2O]^1}{[HNO_3]^2\times [NO]^1}$

$K_c=\frac{(0.051)^3\times (1.10)^1}{(0.026)^2\times (0.058)^1}$

$K_c=3.72$

Thus the value of the equilibrium constant Kc for this reaction is 3.72

5 0

3 years ago

What is the frequency of electromagnetic radiation with a wavelength of 6.34 x 10^8 m?

Svetllana [295]

<h2>Answer: 4.72 × 10⁷ s⁻¹ or Hz</h2><h3> Explanation: </h3>

frequency = speed of light ÷ wavelength

frequency = (2.99 × 10⁸ m/s) ÷ (6.34 × 10⁸ m)

= 4.72 × 10⁷ s⁻¹ or Hz

8 0

3 years ago

Is d correct and did I do the process correctly

PIT_PIT [208]

Answer:

1,500$

Explanation:

this would be the answer wouldn't it?

7 0

2 years ago