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
MissTica
3 years ago
14

The earth was created about_____ years ago. 15,000 20,000 6,000 3,000

Chemistry
1 answer:
Sphinxa [80]3 years ago
5 0
It was created about 6,000 years ago
You might be interested in
A compound containing phosphorus and oxygen has a molar mass of 219.9 g/mol and an empirical formula of p2o3. Determine its mole
Softa [21]

Answer:

P₄O₆

Explanation:

The molecular formula is a whole number multiple of the empirical formula. that is, if the mole wt is 219.9 gms/mole and the empirical formula weight is 110 gms/mole*, then the whole number multiple is 219.9/110 = 2 => Molecular formula => (P₂O₄)₂ => P₄O₆.

7 0
3 years ago
Which of the following are SI units? Select<br> all that apply.
Dimas [21]
<h3>Answer:</h3>

Seconds (s)

Liters (L)

<h3>Explanation:</h3>

SI units relate to the International System of Units. These units are the base, metric units that are most commonly accepted for different measurements.

Common SI Units

The most common SI units are as follows:

  • Length - meter (m)
  • Time - second (s)
  • Mass - kilogram (kg)
  • Amount of substance - mole (mole)
  • Electric current - ampere (A)
  • Temperature - kelvin (K)
  • Volume - liter (L)

*Note that gram (g) is not an SI unit

Each type of measurement will only have 1 SI unit. This is the unit that will be expected for most answers. Sometimes this means converting an answer into a different unit so it is more widely accepted.

Why SI Units are Important

SI units are important for the same reason that the metric system is used. It gives a standardized list of measurements that scientists across the world can use. Also, it makes it easier to compare scientific findings and studies when all of the measurements are given in the same units.

There are times when it is unrealistic to use SI units. For example, when discussing space, using meters will not be realistic due to the size of space. Also, when measuring the mass of small elements, kilograms are too large. But otherwise, SI units should be used.

3 0
1 year ago
What intermolecular force attracts two non polar molecules to each other
Salsk061 [2.6K]

The intermolecular force that attracts two nonpolar molecules is London dispersion forces, which are also called induced dipole-induced

3 0
2 years ago
What would be the effect on the observed melting point of sample were poorly packed?
Neko [114]
If a sample is packed poorly, the sample will not heat evenly and will take longer to melt.
5 0
3 years ago
Calculate the [H3O+] of solutions a and b; calculate the [OH-] solutions c and d.
patriot [66]

Answer:

I got the answers but it won't let me post it correctly on here....

Explanation:

9.) 10-2.76 =0.0174 [H30+]= 1.74*10-3 M

10.)10-3.65=0.00224  [H3O+] =2.24*10-2 M

11.)10-3.65=0.00224 [OH-]= 2.224*10-4M

12.)10-6.87=0.00000135  [OH-]= 1.35*10-7M

3 0
3 years ago
Other questions:
  • Biology
    8·2 answers
  • What two conditions must satisfy to be called matter ?
    12·1 answer
  • Which of the following affects the rate of a chemical reaction?
    9·2 answers
  • Find the mass in grams of 2.00 * 10 ^ 23 molecules of dinitrogen pentoxide gas.
    9·1 answer
  • In the reaction H2SO4 + 2 NaOH -&gt; Na2SO4 + 2H2O, an equivalence point occurs when 23.1 mL of 0.2055 M NaOH is added to a 25.0
    10·1 answer
  • Jodie is studying the sleeping habits of various types of animals. She wants to know how long each type of animal sleeps during
    7·1 answer
  • Sulfur and fluorine form several different compounds including sulfur hexafluoride and sulfur tetrafluoride. Decomposition of a
    15·1 answer
  • Describe the direction in which each object will accelerate. If the object won’t accelerate, write “no acceleration.” Explain wh
    12·1 answer
  • a brick measures of 13 inches i length 10 iches in height and 4 inches in width what is the vlume of the brick
    6·1 answer
  • Would the size of an item affect whether or not it is flammable?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!