All categories

2 years ago

What is the meaning of resolution in science?

Chemistry

1 answer:

horrorfan [7]2 years ago

7 0

Answer:

Resolution is the ability to distinguish two objects from each other. Light microscopy has limits to both its resolution and its magnification.

You might be interested in

For the reaction C6H14(g) ------> C6H6(g) + 4H2(g), the rate of formation of hydrogen gas, H2 was found to be 2.5 x 10-2 atm/

riadik2000 [5.3K]

Answer : The rate of consumption of hexane is, $6.25\times 10^{-3}atm/s$

Explanation :

The general rate of reaction is,

$aA+bB\rightarrow cC+dD$

Rate of reaction : It is defined as the change in the concentration of any one of the reactants or products per unit time.

The expression for rate of reaction will be :

$\text{Rate of disappearance of A}=-\frac{1}{a}\frac{d[A]}{dt}$

$\text{Rate of disappearance of B}=-\frac{1}{b}\frac{d[B]}{dt}$

$\text{Rate of formation of C}=+\frac{1}{c}\frac{d[C]}{dt}$

$\text{Rate of formation of D}=+\frac{1}{d}\frac{d[D]}{dt}$

$Rate=-\frac{1}{a}\frac{d[A]}{dt}=-\frac{1}{b}\frac{d[B]}{dt}=+\frac{1}{c}\frac{d[C]}{dt}=+\frac{1}{d}\frac{d[D]}{dt}$

From this we conclude that,

In the rate of reaction, A and B are the reactants and C and D are the products.

a, b, c and d are the stoichiometric coefficient of A, B, C and D respectively.

The negative sign along with the reactant terms is used simply to show that the concentration of the reactant is decreasing and positive sign along with the product terms is used simply to show that the concentration of the product is increasing.

The given rate of reaction is,

$C_6H_{14}(g)\rightarrow C_6H_6(g)+4H_2(g)$

The expression for rate of reaction :

$\text{Rate of disappearance of }C_6H_{14}=-\frac{d[C_6H_{14}]}{dt}$

$\text{Rate of formation of }C_6H_6=+\frac{d[C_6H_6]}{dt}$

$\text{Rate of formation of }H_2=+\frac{1}{4}\frac{d[H_2]}{dt}$

As we know that, the partial pressure is directly proportional to the concentration. So,

$\text{Rate of reaction}=-\frac{dP_{C_6H_{14}}}{dt}=+\frac{dP_{C_6H_6}}{dt}=+\frac{1}{4}\frac{dP_{H_2}}{dt}$

Given:

$+\frac{dP_{H_2}}{dt}=2.5\times 10^{-2}atm/s$

As,

$-\frac{dP_{C_6H_{14}}}{dt}=+\frac{1}{4}\frac{dP_{H_2}}{dt}=2.5\times 10^{-2}atm/s$

and,

$\frac{dP_{C_6H_{14}}}{dt}=\frac{1}{4}\times 2.5\times 10^{-2}atm/s$

$\frac{dP_{C_6H_{14}}}{dt}=6.25\times 10^{-3}atm/s$

Thus, the rate of consumption of hexane is, $6.25\times 10^{-3}atm/s$

4 0

3 years ago

For the following reaction, 5.05 grams of copper are mixed with excess silver nitrate. The reaction yields 11.0 grams of copper(

andreyandreev [35.5K]

Answer:

14.9 g is the ideal yield of Cu(NO₃)₂

Explanation:

Reactants for the reaction: Cu and AgNO₃

Products: Copper nitrate and Ag

The balanced reaction is: Cu(s) + 2AgNO₃(aq) → 2Ag (s) + Cu(NO₃)₂

As the silver nitrate is in excess, the Cu will be the limiting reagent.

We convert the mass to moles → 5.05 g . 1 mol/ 63.55 g = 0.0794 moles

Ratio is 1:1, so 0.0794 moles will produce 0.0794 moles of Cupper(II) nitrate. We convert the moles to mass, and that value will be the theoretical yield.

0.0794 mol . 187.55 g /1 mol = of Cu(NO₃)₂

8 0

2 years ago

Balancing chemical equation ]

olga_2 [115]

There no equation to balance.

Anyway

To be a balance equation the atom on the both side need to equal.

8 0

3 years ago

Do metals donate or accept electrons? what do they become after they donate/accept electrons?

valentinak56 [21]

Metal usually donates electrons. The concept behind this phenomenon is stability. The elements with the most stable electronic configuration are the noble gases in Group 5A. As a result, the other elements donate or accept electrons so that they would be like the noble gases. Since metals are past their nearest noble gas element, they have to shed their electrons. When they do, they become cations which are positively charged ions.

8 0

3 years ago

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 16.8g of carbon were burned in the presence of

Mrrafil [7]

61.6 grams of carbon dioxide was produced

4 0

2 years ago