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
Lady bird [3.3K]
3 years ago
15

Which component is an example of scientific law?

Chemistry
1 answer:
Hitman42 [59]3 years ago
4 0

D. Gravity is a dent in the fabric of space and time.

or

B. Radium is a radioactive element.

You might be interested in
Putting up 98 points! Will give medal
VladimirAG [237]

A calorimeter contains 500 g of water at 25°C.....

the temperature of the water inside the calorimeter is 39.4°C.....

The specific heat of water is 4.18 J/g-°C.

energy needed to heat the water = specific heat * mass * temp difference

= 4.18 J/g-°C * 500 g * (39.4°C - 25°C)

= 4.18*500*14.4

= 30096J

or approx. 30kJ

4 0
3 years ago
Read 2 more answers
List 5 of the signs that can identify the evidence of a chemical change.<br>​
trapecia [35]

Answer:

here are some ideas <3

Explanation:

burning of paper.

cooking of food

burning of wood

rotting of fruits.

frying egg

rusting of iron

mixing acid and base.

burning of candle

leaves changing color

melting of sugar.

baking

explosion of fireworks.      

souring milk

digestion of food

fermentation

lighting matchstick

photosynthesis

decomposition of waste

8 0
3 years ago
ASAP!!! Explain: Why do black lines appear on the absorption spectrum of the sun?
Molodets [167]

The black lines in the Sun's spectrum are caused by gases on, or above, the Sun's surface that absorb some of the emitted light.

3 0
3 years ago
Dimethyl sulfoxide is an important polar aprotic solvent that can dissolve both polar and nonpolar compounds and is miscible in
lesya [120]

Answer:

The structure is shown below.

Explanation:

To draw a structure first we need to know its molecular formula, which is C2H6SO for dimethyl sulfoxide. The central atom is sulfur, which is bonded to an oxygen and with two methyl groups (CH3).

Sulfur has 6 electrons in its valence shell, as so oxygen. To complete the octet of oxygen, 2 electrons will be shared by sulfur with it. So, it remains 4 electrons at the central atom. Carbon has 4 electrons in its valence shell, so it needs more 4 to be stable, and is already sharing 3 electrons with the hydrogens, thus, sulfur will share one electron with each one of them.

So, it will remain 2 nonbonding electrons in the central atom. According to the VSPER theory, to minimize formal charges, the structure would be a trigonal pyramid, but, the double bonding with oxygen has a large volume, then the geometry will be trigonal, as shown below.

4 0
4 years ago
Calculate the frequency of a wave with a wavelength of 8.00x10 m. In what region of the electromagneti spectrum is this?
zheka24 [161]

<em>The frequency of the wave with a wavelength of is</em> <u>3.748 × 10 ⁶ /s</u>.

I attached the working and the answer to the question below. I hope I was able to help.

Please note that C = speed of light (2.998 × 10⁸ m/s), ν = frequency and λ= wavelength.



7 0
3 years ago
Other questions:
  • If I want to say HCl(g), do I need to say the gas form of hydrogen chloride or hydrochloric acid?​
    14·1 answer
  • A protein has the amino acid sequence
    15·1 answer
  • The volume of a gas is the same as its _____.
    7·2 answers
  • How many moles of hydrogen gas are needed to produce 20 grams of hydrochloric acid (HCl)?
    5·1 answer
  • The type of evaporator that has all saturated liquid entering the evaporator and saturated liquid throughout the evaporator is c
    12·1 answer
  • Sodium forms a positive ion. is the name of the ion sodium or sodide?
    5·1 answer
  • A piston starts out with a volume of 3.000 L at 250.0 K and 800.0 torr. It is heated to 500.0 K and has a new volume of 4.000 L.
    11·1 answer
  • Un convertidor catalítico acelera la reacción del monóxido de carbono con oxígeno para producir dióxido de carbono. ¿De qué mane
    12·1 answer
  • I need help (yes again)
    11·2 answers
  • How much Ba(OH)2, in grams, is needed to make a 1.00m aqueous solution?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!