Identify unit of measure would be most appropriate to measure the distance between two planets in our solar system

1 answer:

3 0

The astronomical unit or also know as AU. Scientists use this because it’s convenient and easier to understand! Hope this helps ;)

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What is the name of the specialized type of cell in human eyes which help to detect color?

Tomtit [17]

The specialized type of cell in human eyes which help to detect color, a layer at the back of the eyeball containing cells that are sensitive to light and that trigger nerve impulses that pass via the optic nerve to the brain, that is called a retina.

7 0

4 years ago

Read 2 more answers

The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 8.00 g of conden

algol13

Explanation:

It is known that heat (Q) required to change the phase of a given sample of mass m will be as follows.

$Q_{f} = mL_{f}$ ........ (1)

where, $L_{f}$ = latent heat of fusion

Similarly, $Q_{v}$ = mL_{v}[/tex] ....... (2)

where, $L_{v}$ = latent heat of vaporization

As it is known that value of latent heat of fusion of water is 334 J/g and latent heat of vaporization of water is 2260 J/g.

Hence, equating both the equations as follows.

$m_{condensation} \times L_{v}$ = $m_{fusion} \times L_{f}$

$m_{fusion}$ = $\frac{m_{condensation} \times L_{v}}{L_{f}}$

= $\frac{8 g \times 2260 J/g}{334 J/g}$

= 54.13 g

Hence, we can conclude that 54.13 grams of ice will melt.

7 0

4 years ago

Anyway, which is a spectator ion involved in the reaction of k2cro4(aq) and ba(no3)2(aq)?

marissa [1.9K]

Nitrate ions $\text{NO}_3^{-}$ and potassium ions $\text{K}^{+}$ .

<h3>Explanation</h3>

Potassium dichromate undergoes a double-decomposition reaction with barium nitrate to produce barium dichromate and potassium nitrate. The reaction is possible due to the low solubility of barium dichromate that precipitate out of the solution readily after its production.

Start with the balanced chemical equation for this process:

$\text{K}_2\text{CrO}_4 \; (aq) + \text{Ba}(\text{NO}_3)_2 \; (aq) \to \text{Ba}(\text{CrO}_4)_2 \; (s) + 2 \; \text{KNO}_3 \; (aq)$

Rewrite the chemical equation as an ionic one; express all soluble salts- those with state symbol (aq)- as their constituting ions while leaving the insoluble (s) intact.

$2 \; \text{K}^{+}\; (aq)+ 2\; \text{CrO}_4^{-} \; (aq) + \text{Ba}^{2+} \; (aq) + 2 \; \text{NO}_3^{-} \; (aq) \\ \to \text{Ba}(\text{CrO}_4)_2 \; (s) + 2 \; \text{K}^{+} \; (aq) + 2 \; \text{NO}_3^{-} \; (aq)$

$\text{K}^{+}$ and $\text{CrO}_4^{-}$ are found on both sides of the equation by the same quantity. The two ions thus took no part in the net reaction and act as spectator ions.