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3 years ago

Blue light has a frequency of 6.98 • 10^14 Hertz. Calculate the wavelength of blue light in nanometers.

Chemistry

1 answer:

topjm [15]3 years ago

3 0

Wavelength of blue light = (3*10^8)/(6.98*10^14) = 0.4298*10^-6 or 430 nm

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Using the periodic table as a reference, which elements could bond to form a compound most like NaCl?

pychu [463]

step by step

Na(sodium)=2.8.1

Cl (Chlorine)=2.8.7. sodium will give the chlorine the 1 valence electron to become stable ions.

answer

pottasium. (2.8.8.1) and Flourine(2.7)

4 0

3 years ago

Suppose that the carbon atom pictured here as a reactant had already formed a double bond with another carbon atom. How many hyd

cricket20 [7]

Answer:Two more hydrogen atoms will be required

Explanation:

A carbon atom has 4 valence electrons in its outermost shell,thus it can form 4 covalent bonds.Two pairs of electrons are shared in a double bond between C-C atom.two more electrons are left which is shared with two hydrogen atoms.

8 0

2 years ago

What is the pH of a solution with an H3O+ concentration of 5.67 x 10-4 M?

Valentin [98]

Answer:

Explanation:

The pH of a solution can be found by using the formula

$pH = - log [ { H_3O}^{+}]$

From the question we have

$ph = - log(5.67 \times {10}^{ - 4} ) \\ = 3.2464$

We have the final answer as

Hope this helps you

3 0

2 years ago

2. A chemical analysis of a sample provides the following elemental data:

Vadim26 [7]

Answer:

C3 H6 O2

Explanation:

first divide their mass by their respective molar mass, we get:

30.4 moles of C

61.2 moles of H

20.25 moles of O

now divide everyone by the smallest one of them then we get

C= 1.5

H= 3

O= 1

since our answer of C is not near to any whole number so we will multiply all of them by 2

so,

C3 H6 O2 is our answer

3 0

1 year ago

True or False; aa is faster moving lava than pahoehoe?

frosja888 [35]

Answer:

It is false :l

Explanation:

Pahoehoe is a smooth and continuous lava crust. Pahoehoe forms when the effusion rate is low and consequently the velocity of lava flow is slow. Pahoehoe lava flow is usually at least 10 times slower than typical aa lava flow.

7 0

2 years ago