1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
liubo4ka [24]
2 years ago
11

9. Calculate the frequency of light with a wavelength = 12 km. (kilo = 10')

Chemistry
1 answer:
Schach [20]2 years ago
4 0
What grade are you in? I just wanna know just to see if I learned about this
You might be interested in
Give me some names of a main sequence star other than the sun
ivolga24 [154]
Arietis, camelopardalis, lyncis, scorpii, cancri, canis minoris
7 0
3 years ago
Read 2 more answers
If the mass of the object below is 28g, what is the density of the object below. Units are in cm below. Please round your answer
Murljashka [212]

Answer:

d = 0.93 g/cm³

Explanation:

Given data:

Mass of object = 28 g

Volume of object = 3cm×2cm×5cm

density of object = ?

Solution:

Volume of object = 3cm × 2cm ×5cm

Volume of object = 30 cm³

Density of object:

d = m/v

by putting values,

d = 28 g/ 30 cm³

d = 0.93 g/cm³

3 0
3 years ago
how many kilograms of a 35% m/m sodium chlorate solution is needed to react completely with 0.29 l of a 22% m/v aluminum nitrate
Stolb23 [73]

Answer:- 0.273 kg

Solution:- A double replacement reaction takes place. The balanced equation is:

3NaClO_3+Al(NO_3)_3\rightarrow 3NaNO_3+Al(ClO_3)_3

We have 0.29 L of 22% m/v aluminum nitrate solution. m/s stands for mass by volume. 22% m/v aluminium nitrate solution means 22 g of it are present in 100 mL solution. With this information, we can calculate the grams of aluminum nitrate present in 0.29 L.

0.29L(\frac{1000mL}{1L})(\frac{22g}{100mL})

= 63.8 g aluminum nitrate

From balanced equation, there is 1:3 mol ratio between aluminum nitrate and sodium chlorate. We will convert grams of aluminum nitrate to moles and then on multiplying it by mol ratio we get the moles of sodium chlorate that could further be converted to grams.

We need molar masses for the calculations, Molar mass of sodium chlorate is 106.44 gram per mole and molar mass of aluminum nitrate is 212.99 gram per mole.

63.8gAl(NO_3)_3(\frac{1mol}{212.99g})(\frac{3molNaClO_3}{1molAl(NO_3)_3})(\frac{106.44g}{1mol})

= 95.7gNaClO_3

sodium chlorate solution is 35% m/m. This means 35 g of sodium chlorate are present in 100 g solution. From here, we can calculate the mass of the solution that will contain 95.7 g of sodium chlorate  and then the grams are converted to kg.

95.7gNaClO_3(\frac{100gSolution}{35gNaClO_3})(\frac{1kg}{1000g})

= 0.273 kg

So, 0.273 kg of 35% m/m sodium chlorate solution are required.

7 0
3 years ago
I NEED HELP WITH ASAP!!
ivann1987 [24]
C. <span>High temperatures make the gas molecules move more quickly.
</span>
6 0
3 years ago
What attraction helps<br> to hold a atoms<br> together?
HACTEHA [7]

Answer:

The forces that hold atoms together are the electrical force and the strong force, which is stronger than the electrical force.

           ღ ღ ღ ღ ღ ღ Hope This Helpsღ ღ ღ ღ ღ ღ

7 0
3 years ago
Other questions:
  • Scientific knowledge can withstand the test of time because A. exceptions can be made regarding scientific laws. B. it is open t
    9·2 answers
  • Calculate the atomic mass (average atomic mass) of naturally occurring oxygen.
    15·1 answer
  • Why might you have difficulty determining the pH of bleach using ph strips?
    6·1 answer
  • The reaction 2X →products is a second-order reaction, and the rate constant is 8.8 × 10−3 1/M·s. If the initial concentration of
    5·1 answer
  • 0.01 M HCl solution has a pH of 2. Suppose that during the experiment, both the universal pH indicator and the cabbage indicator
    14·4 answers
  • Which of the following is an example of energy causing motion?
    13·2 answers
  • Imagine that one tree outside your home looks unhealthy, although all the other trees seem healthy and strong. Describe how you
    12·1 answer
  • A gravel can be broken down into different kinds of substances by physical processes. No chemical reactions are needed to separa
    9·2 answers
  • How many Cl- bond with one Na+ ion?
    10·1 answer
  • Write the symbol for every chemical element that has atomic number less than 13 and atomic mass greater than 17.2 u.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!