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3 years ago

Describe two ways you could demonstrate an acceleration of 2 meters per second squared?

Chemistry

2 answers:

BaLLatris [955]3 years ago

7 0

Answer:

You could do 88 metars

Explanation:

Elena-2011 [213]3 years ago

6 0

88 meters

hope this helps:)

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Consider the balanced equation below. 4NH3 + 3O2 2N2 + 6H2O What is the mole ratio of NH3 to N2?

vladimir1956 [14]

Is go be 4x=7 so when you see yo thing pick the 2nd one it's go be b

3 0

3 years ago

Read 2 more answers

1. The electronegativities of the period-3 elements are listed on the transparency. Calculate the

Firdavs [7]

The correct answer is c. Please give me brainlest let me know if it’s correct or not thanks bye

8 0

3 years ago

15A.4(a) What is the temperature of a two-level system of energy separation equivalent to 400 cm−1 when the population of the up

maksim [4K]

Answer:

T = 525K

Explanation:

The temperature of the two-level system can be calculated using the equation of Boltzmann distribution:

$\frac{N_{i}}{N} = e^{-\Delta E/kT}$ (1)

where Ni: is the number of particles in the state i, N: is the total number of particles, ΔE: is the energy separation between the two levels, k: is the Boltzmann constant, and T: is the temperature of the system

The energy between the two levels (ΔE) is:

$\Delta E = hck$

where h: is the Planck constant, c: is the speed of light and k: is the wavenumber

$\Delta E = 6.63\cdot 10^{-34} J.s \cdot 3\cdot 10^{8}m/s \cdot 4 \cdot 10^{4}m^{-1} = 7.96 \cdot 10^{-21}J$

Solving the equation (1) for T:

$T = \frac{-\Delta E}{k \cdot Ln(N_{i}/N)}$

With Ni = N/3 and k = 1.38x10⁻²³ J/K, the temperature of the two-level system is:

$T = \frac{-7.96 \cdot 10^{-21}J}{1.38 \cdot 10^{-23} J/K \cdot Ln(N/3N)} = 525K$

I hope it helps you!

3 0

3 years ago

Which structure diagram completes the table of physical structures of the main functional groups? A 6 column table with 1 row. C

erastovalidia [21]

Answer:

Explanation:

did it on edge

7 0

2 years ago

How many liters of a 0.5 m sodium hydroxide solution would contain 2 moles of solute?

Klio2033 [76]

Answer:

4 liters

Explanation:

1) Data:

a) M = 0.5 M

Note: since the question is about volume (liters) and moles of solute, the correct unit for the concentration of the hydroxide solution is M (upper case) which is the unit for molarity. Lower case m is used for molality, and you cannot calculate the volume of the solution unless you know some other data, e.g. density of the solution.

b) n = 2

c) V (in liters) = ?

2) Formula:

Molarity is the number of moles of solute per liter of solution:

M = n / V (in liters)

3) Solution:

a) Clear V from the formula: V (in liters) = M / n

b) Substitute: V (in liters) = 2 moles / 0.5M = 4 liters ← answer

7 0

3 years ago