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4 years ago

How much heat in kilojoules is required to heat 56 l of water from 89 ∘f to 212 ∘f?

1 answer:

3 0

You would need 67 if you add 56 and 89 = 145 and how i got 67. i went and subtract 212 and 145 = 67 and hope that answer you want if not well least i try

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For a reaction that follows the general rate law, Rate = k[A][B]2, what will happen to the rate of reaction if the concentration

sleet_krkn [62]

Answer:

The rate will increase by a factor of 5.00 too.

Explanation:

Hello,

In this case, given the rate law:

$r=k[A][B]^2$

Thus, we can notice it is first-order respect to A, for that reason, increasing its concentration by a factor of 5.00, increase the rate by a factor of 5.00 as well.

Moreover, if the concentration of B is increased by the same factor, the rate will increase by a factor of 25.00, since the rate is second-order respect to B (it is squared).

Best regards.

5 0

3 years ago

2. If a gas at 500 mL has a temperature of 45°C, then what is the new volume when the temperature is increased to 65°C? Show you

OLEGan [10]

Answer:

V2= 531.4 ml

Explanation:

T1= 273+45 °C= 318 Kelvin

T2= 273+65 °C= 338 Kelvin

V1= 500ml *( 0.001L/1ml)= 0.5 Liters

V2= $\frac{V1 * T2}{T1}$ = $\frac{0.5 L * 338K}{318K}$ = 0.5314465409 Liters* (1 ml/0.001 L)= 531.4 ml

8 0

3 years ago

According to the rydberg equation, the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicte

monitta

It is predicted to lie at a wavelength of 91.2 nm.
Rydberg equation is a mathematical formula that is used to predicts the wavelength of light resulting from an electron moving between energy levels of an atom. Rydbery equation is used to describe the spectral wavelengths of chemical elements. The equation is made up of different components, which include n1 and n2. The n1 of the equation has a value of 1 while the n2 runs from 2 to infinity; this makes the spectral lines to converge at point 91.2 nm.

4 0

3 years ago

PLEASE HELP ME ASAP PLEASE!!!

Sliva [168]

Answer:

$\large \boxed{\text{1763 psi}}$

Explanation:

We can use Dalton's Law of Partial Pressures:

Each gas in a mixture of gases equals its pressure independently of the other gases

$\begin{array}{rcl}p_{\text{NO2}} + p_{\text{CO2}} & = & p_{\text{tot}} \\p_{\text{NO2}} + \text{795 psi} & = &\text{2558 psi} \\p_{\text{NO2}} & = &\text{2558 psi - 795 psi} \\& = & \textbf{1763 psi}\\\end{array}\\\text{The partial pressure of nitrogen dioxide is $\large \boxed{\textbf{1763 psi}}$}$

4 0

4 years ago

This graph shows the energy involved in a reaction involving two molecules. Describe what is happening or what the state of the

djyliett [7]

Answer:

Explanation:

6 0

3 years ago