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
tigry1 [53]
3 years ago
6

iron-rich minerals in rock pointed in one direction and then switched to the exact opposite direction this supports what idea?

Chemistry
1 answer:
goldenfox [79]3 years ago
3 0
Earths magnetic field goes through the pole reversals. Hope I helped and you're very welcome! :3 
You might be interested in
How scientists used the scientific method to learn more about how dinosaurs became extinct​
lesya [120]

Answer:

they tested the bone age

Explanation:

4 0
3 years ago
A 0.1 gram sample of an unknown liquid is vaporized completely at 70 degrees C to fill a 750mL flask. The pressure is 0.05951atm
Deffense [45]

Answer:

The molar mass of the liquid 62.89 g/mol

Explanation:

Step 1: Data given

Mass of the sample = 0.1 grams

Temperature = 70°C

Volume = 750 mL

Pressure = 0.05951 atm

Step 2: Calculate the number of moles

p*V = n*R*T

n = (p*V)/(R*T)

⇒ with n = the number of moles gas = TO BE DETERMINED

⇒ with p = The pressure = 0.05951 atm

⇒ with V = The volume of the flask = 750 mL = 0.750 L

⇒ with R = The gasconstant = 0.08206 L*atm/K*mol

⇒with T = the temperature = 70 °C = 343 Kelvin

n = (0.05951 *0.750)/(0.08206*343)

n = 0.00159 moles

Step 3: Calculate molar mass

Molar mass = mass / moles

Molar mass =0.1 gram /  0.00159 moles

Molar mass = 62.89 g/mol

The molar mass of the liquid 62.89 g/mol

6 0
3 years ago
Can someone please help
Ratling [72]

Answer:

1. c) shiny

2) True. Reactivity is a chemical property.

6 0
3 years ago
Read 2 more answers
A sample of carbon of mass 250 mg from wood found in a tomb underwent 2480 carbon- 14 disintegrations in 20 h. Estimate the time
Ksenya-84 [330]

Explanation:

Let the age to be found in years is y.

Hence,       (2480 disintegrations) \times \frac{\frac{1.0g}{0.250g}}{1.84 \times 10^{4} disintegrations}

                        = (\frac{1}{2})^{\frac{y}{5730yr}}

Solve for y as follows.

                    0.53913 = (\frac{1}{2})^{\frac{y}{5730yr}}

Now, taking log on both the sides as follows

               log 0.53913 = (\frac{z}{5730}) log \frac{1}{2}


               \frac{log 0.53913}{log (1/2)} = \frac{z}{5730}

                       z = \frac{5730 \times log 0.53913}{log (1/2)}

                         = 5107 years

Thus, we can conclude that the time since death is 5107 years.

5 0
3 years ago
The amount of energy required to move an electron from one energy level to the next higher one is known as: A. quantum of energy
Sidana [21]

The Answer will be A.) Quantum Of Energy .

6 0
3 years ago
Other questions:
  • Do all systems have energy?
    5·1 answer
  • A solution is prepared by mixing 2.88 mol of acetone with 1.45 mol of cyclohexane at 30°C. 2nd attempt Calculate the χacetone an
    9·1 answer
  • - Calculate the molarity of 23 grams of OH in 24<br> of water
    14·1 answer
  • plz answer fast Which is not a crystalline allotrope of carbon? Select one: a. soot b. diamond c. graphite
    11·1 answer
  • PLEASEEE HELP NOW!!! 60 BRAINLIEST!!
    7·2 answers
  • Help ASAP!!!!’
    10·1 answer
  • A strong compact cuticle makes for
    6·1 answer
  • you find 13406190 pennies. how many dollars did you actcually find? if each penny weighs 4 grams, how much does all of it weigh
    5·1 answer
  • I WILL GIVE BRAINLIEST
    12·1 answer
  • Help i cant do this i need this ASAP
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!