What is the mass of one electron in grams if an electron has the charge of
-1.6022 x 10-19C and lg = -1.76 x 108 C.

Answer:

1045

Answer: 1045 J of energy was released on cooling the down the water from 20 °C to 10 °C.

Answer:

..............=2100

Answer:

Gravitational potential energy may be converted to other forms of energy, such as kinetic energy. If we release the mass, gravitational force will do an amount of work equal to mgh on it, thereby increasing its kinetic energy by that same amount (by the work-energy theorem).

Explanation:

Answer:

the lack of maria; the thicker crust means it was harder for giant impacts to pierce the crust and get darker basaltic lava bubbling up.

Explanation:

Answer:

D. The total amount of energy in the system always stays the same

Explanation:

In the closed system, the total amount of energy in the system always stays the same.

Closed system is a arrangement in which exchange of energy or any material is restricted.

If any reaction is carried out in a closed system then energy of the system may convert from internal energy to potential or from potential to kinetic energy. But the total energy of the closed system is always remain same as before and after the reaction.

Hence option (D) is correct.

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Explanation:

Atoms in the equation are already in balance.

Answer:

it is d, got it right on EDG

Explanation:

Answer:

y or z one of those two i think its z but im so sorry if im wrong if not z then try y also I learned this last year.

Answer: 10^-11

Explanation:

to find the concentration of H+ ions given the ph, we use the formula 10^(-pH).

so 10^-11

Answer:

bug vfyjovcduvcu Harris's

Answer:

see attachment......

Answer: 3

Explanation:

Answer:

kinetic energy

Explanation:

may be iam not sure

wow isn't this interesting, I never would've thought to find u on here

Answer:

in first picture pressure is low and in second picture the pressure is high

2ans in first picture air is

less amount

in second picture air is high amount

Answer:

80°F

Explanation:

Lukewarm means moderately warm. 80°C (176°F) water is extremely hot and could burn someone. 80°F (26 2/3°C) is moderately warm.

Answer:

The time of heating

Explanation:

Let us analyse the experiment closely; the temperature of the liquid increases as the time of heating increases. This implies that the temperature of the liquid is dependent on the time of heating of the liquid. The longer the time of heating, the greater the increase in temperature until the boiling temperature is eventually attained.

Hence, the temperature of the liquid is the dependent variable, the time of heating is the independent variable when the heating rate is held constant.

Answer:276ml

Explanation:

Answer:

electrons

Explanation:

since they are at the outer part of nucleus

Answer:

Weakly

Explanation:

Being farther from the nucleus and with more electrons shielding the protons results in the valence electrons being held weakly.

Answer:

3.5ML

Explanation:

At the constant pressure, the final volume of the carbon dioxide gas was equal to 4.62 ml at a temperature of 0ºC.

Charles's law can be explained as when the pressure of the gas is kept constant, the volume of gas is directly proportional to the temperature of a gas.

The volume of the gas and the temperature of the gas have a direct relationship according to this law.

Therefore, V∝ T

or    V₁/T₁ = V₂/T₂                                               ....................(1)

Given, the initial temperature of the CO₂ gas, T₁ = 22 ºC

T₁ = 22 + 273 = 295 K

The final temperature of the CO₂ gas, T₂ = 0ºC

T₂ = 0 + 273 = 273 K

The initial volume of the gas, V₁ = 5 ml

Substitute the value of V₁, T₁, and T₂ in equation (1 ) to get final volume of CO₂ gas:

5/295 = V₂/273

V₂ = 4.6 ml

Therefore, the final volume of the gas is equal to 4.6 ml at 0 ºC, when there is no change in the pressure.

Learn more about Charles's law, here:

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Explanation:

The nitrate anion is a univalent (-1 charge) polyatomic ion composed of a single nitrogen atom ionically bound to three oxygen atoms (Symbol: NO3) for a total formula weight of 62.05. Lead Nitrate is generally immediately available in most volumes.

Answer:

Phenolphthalein is an indicator. It is pink in alkaline solutions and turns colourless as the pH decreases.

It can be used to measure the activity of the enzyme lipase on the breakdown of lipids.

Samples of milk containing phenolphthalein were incubated with lipase at different temperatures.

The time taken for the phenolphthalein to turn colourless was recorded and used to calculate the rate of enzyme activity.

Figure 10 shows these results.

Picture

(a) (i) Explain why phenolphthalein turns colourless when lipase breaks down the lipids in milk. (2)

(ii) Describe the effect of temperature on the activity of lipase, as shown in Figure 10. (2)

(iii) Explain why the activity of lipase changes above a temperature of 40°C. (2)

(b) A student investigated the time taken for amylase to breakdown a 10% starch solution into glucose at 37°C. The student repeated the investigation five times.

Answer: One change of state happens when you add energy to the substance. This change of state is called melting. By adding energy to the molecules in a solid the molecules begin to move quicker and can break away from the other molecules.

Explanation: I hoped that helped!

Answer:

hope it helps...

Explanation:

a constituent element, material, etc.; component. a person who authorizes another to act in his or her behalf, as a voter in a district represented by an elected official. Grammar. an element considered as part of a construction. Compare immediate constituent, ultimate constituent.

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Answer:

La velocidad inicial es 55 [tex]\frac{m}{s}[/tex]y su aceleración es -10 [tex]\frac{m}{s^{2} }[/tex]

Explanation:

Un movimiento es rectilíneo uniformemente variado, cuando la trayectoria del móvil es una línea recta y su velocidad  varia la misma cantidad en cada unidad de tiempo . Dicho de otra manera, este movimiento se caracteriza por una trayectoria que es una línea recta y la velocidad cambia su módulo de manera uniforme: aumenta o disminuye en la misma cantidad por cada unidad de tiempo. Y la aceleración es constante y no nula (diferente de cero).

En este caso la posición del objeto esta dada por la expresión:

[tex]x=x0+v0*t+\frac{1}{2} *a*t^{2}[/tex]

donde x es la posición del cuerpo en un instante dado, x0 la posición en el instante inicial, v0 la velocidad inicial y a la aceleración.

En este caso, por un lado podes considerar:

Reemplazando obtenes:

[tex]90=v0*2+\frac{1}{2} *a*2^{2}[/tex]

[tex]90=v0*2+\frac{1}{2} *a*4[/tex]

[tex]90=v0*2+2*a[/tex]

Y por otro lado tenes:

Reemplazando obtenes:

[tex]120=v0*3+\frac{1}{2} *a*3^{2}[/tex]

[tex]120=v0*3+\frac{1}{2} *a*9[/tex]

[tex]120=v0*3+\frac{9}{2} *a[/tex]

Por lo que tenes el siguiente sistema de ecuaciones:

[tex]\left \{ {{2*v0+2*a=90} \atop {3*v0+\frac{9}{2} *a=120}} \right.[/tex]

Resolviendo por el método de sustitución, que consiste en aislar en una ecuación una de las dos incógnitas para sustituirla en la otra ecuación, obtenes:

Despejando v0 de la primera ecuación:

[tex]v0= \frac{90-2*a}{2}[/tex]

Reemplazando en la segunda ecuación:

[tex]120=\frac{90-2*a}{2} *3+\frac{9}{2} *a[/tex]

Resolviendo:

[tex]120=(90-2*a)*\frac{3}{2} +\frac{9}{2} *a[/tex]

[tex]120=135-3*a +\frac{9}{2} *a[/tex]

[tex]120-135=-3*a +\frac{9}{2} *a[/tex]

[tex]-15=\frac{3}{2} *a[/tex]

[tex]\frac{-15}{\frac{3}{2} } =a[/tex]

-10=a

Reemplazando el valor de a en la expresión despejada anteriormente obtenes:

[tex]v0= \frac{90-2*(-10)}{2}[/tex]

Resolviendo:

[tex]v0= \frac{90+20}{2}[/tex]

[tex]v0= \frac{110}{2}[/tex]

v0=55

La velocidad inicial es 55 [tex]\frac{m}{s}[/tex]y su aceleración es -10 [tex]\frac{m}{s^{2} }[/tex]

Answer:

The plant would be insect-resistant and improve its chances of success.

Explanation:

Answer:

Balanced Equation

H₂ + Cl₂ → 2HCI

Answer:

Balanced Equation

H₂ + Cl₂ → 2HCI

Explanation:

i did it and 100%

Answer: it floats because it’s less dense than water

Explanation: since it’s less dense it floats