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zloy xaker [14]
2 years ago
14

A motorcyclist completes a journey at an average speed of 65 mph

Chemistry
1 answer:
Andrews [41]2 years ago
8 0
227.5

Hope this helps :)
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How can the periodic table predict properties of elements?
Murrr4er [49]
A major factor in how the periodic table<span> is organized is the configuration of each </span>element's<span> valence electrons. Because </span>elements<span> in each family have the same number of valence electrons, they tend to have several similar </span>characteristics<span>.</span>
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2 years ago
The equation that shows the relationship between speed, wavelength, and frequency of electromagnetic waves is
lorasvet [3.4K]

Answer:

c = λ f

c is the speed of light, λ the wavelength in meters, and f equals the frequency in cycles per second.

Explanation:

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What is the equilibrium constant expression for the reaction below?<br> H2 (g) + I2 (g) → 2 HI(g)
brilliants [131]
<h3>Further explanation</h3>

Given

Reaction

H₂ (g) + I₂ (g) → 2HI(g)

Required

The equilibrium constant

Solution

The equilibrium constant is the value of the product in the equilibrium state of the substance in the right (product) divided by the substance in the left (reactant) with the exponents of each reaction coefficient

The equilibrium constant for reaction  

pA + qB ⇒ mC + nD  

\large {\boxed {\bold {K ~ = ~ \frac {[C] ^ m [D] ^ n} {[A] ^ p [B] ^ q}}}}

So for the above reaction :

\tt K=\dfrac{[HI]^2}{[H_2][I_2]}

8 0
2 years ago
Why is nitrogen used for storage of semen in artificial insemination​
AysviL [449]

Answer:

Explanation:

Nitrogen is use to store semen for artificial insemination because if it's inert characteristics which it help to maintain the semen inertness and also it maintain the low temperature of the semen which is good for it's quality.

Nitrogen also help to prevent it's biological deterioration thereby maintaining it's viability and effectiveness.

8 0
2 years ago
5. A student is trying to identify a metal unknown. The student performs a calorimetry experiment similar to this week’s lab. Th
Murljashka [212]

Answer:

This metal could be lead

Specific heat = 0.0308 cal/g°C

Explanation:

Step 1: Data given

The metal was heated to 115.0°C

in a calorimeter where it cooled to 32.6°C.

Mass of the metal = 25.0 grams

Heat released = 63.5 cal

Step 2: Calculate the specific heat of the metal

Q = m*c*ΔT

⇒with Q = the heat released = 63.5 cal

⇒with m = the mass of the metal = 25.0 grams

⇒with ΔT = the change of temperature = T2 - T1 = 32.6 °C - 115.0°C = -82.4 °C

⇒ c = the specific heat = TO BE DETERMINED

63.5 = 25.0 * c * 82.4

C = 0.0308 cal/g°C

This metal could be lead

5 0
3 years ago
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