All categories

3 years ago

Pilots often use waves of about 2.340m to communicate. what is the frequency of the wave ?why?

Chemistry

1 answer:

uranmaximum [27]3 years ago

3 0

All of the various light waves move with the same speed, a value

<span>abbreviated (c) equal to 3.00 × 108 m/s. The frequency ([1]) that light waves pass a given point is</span>

measured in waves/second or simply ‘per second’ (1/s).

the frequency of the wave f = (3.00 × 10^8 m/s)/ 2.340 m

You might be interested in

Part d based on your answer to part c, how many bonding electrons and lone pair electrons (nonbonding electrons) are there in th

elena55 [62]

The Lewis Structure of HCN is shown below,

Number of Bonding Electrons:
In HCN Hydrogen is bonded to Carbon through single bond and Nitrogen is bonded to Carbon through Triple Bond. Single bond is formed by two bonding electrons, while, triple bond is formed by six bonding electrons, Hence,

Number of Bonding Electrons = 8

Number of Non-Bonding Electrons:
In HCN there is only one lone pair of electron present on Nitrogen atom which is not taking part in bonding. Hence,
Number of Non-Bonding Electrons = 2

Result:

Number of Bonding Electrons = 8

Number of Non-Bonding Electrons = 2

3 0

3 years ago

C. How many moles of gas are in a container with a volume of 9.55 mL at 35 °C and a pressure of 895 mmHg?

olya-2409 [2.1K]

Answer: There are $4.45\times 10^{-4}moles$ of gas are in a container with a volume of 9.55 mL at 35 °C and a pressure of 895 mmHg

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 895 mm Hg= 1.18 atm (760 mm Hg= 1 atm)

V = Volume of gas = 9.55 ml = 0.00955 L (1 L=1000ml)

n = number of moles = ?

R = gas constant = $0.0821Latm/Kmol$

T =temperature = $35^0C=(35+273)K=308K$

$n=\frac{PV}{RT}$

$n=\frac{1.18atm\times 0.00955L}{0.0821L atm/K mol\times 308K}=4.46\times 10^{-4}moles$

Thus there are $4.45\times 10^{-4}moles$ of gas are in a container with a volume of 9.55 mL at 35 °C and a pressure of 895 mmHg

5 0

3 years ago

A solution has a pOH of 8.20. What is the concentration of H3O+?

Sedbober [7]

Answer:

.000001585

Explanation:

14-8.20=5.8

10^-5.8 = H3O+

- Hope this helped! Please let me know if you need further explanation.

7 0

3 years ago

The formation of lithium fluoride (seen here) is due to A) a stronger pull by the lithium atom on its valence electron. B) incre

Nastasia [14]

Answer:

Explanation:

Increased stability in fluoride ion.

4 0

3 years ago

Read 2 more answers

How is the bent geometry related to the tetrahedral geometry?

Nuetrik [128]

Answer:

this shape is called bent or angular. a molecule with four electron groups around the central atom orients the four groups in the direction of a tetrahedron.if there are four atoms attached to these electron groups then the molecular shape is also tetrahedral.

Explanation:

Hope this helped Mark BRAINLEST!!!!!

4 0

2 years ago