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
Sati [7]
3 years ago
8

Use this interactive illustration to examine the movement of the continents over the past 600 million years.Which phrase describ

es the movement of the continents?
*only coming together
*only moving apart
*coming together and moving apart
*not moving; always in one solid land mass
Chemistry
2 answers:
mixas84 [53]3 years ago
7 0
The phrase that describes the movement of the continents based on the interactive illustration that helps us examine the movement of the continents over the past 600 million years is this: <span>coming together and moving apart. The answer is the third option. Hope this helps.</span>
Vlad1618 [11]3 years ago
4 0

the answer is C) moving together and moving apart

You might be interested in
The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.
Marina86 [1]

Answer:

Therefore it will take 7.66 hours for 80% of the lead decay.

Explanation:

The differential equation for decay is

\frac{dA}{dt}= kA

\Rightarrow \frac{dA}{A}=kdt

Integrating both sides

ln A= kt+c₁

\Rightarrow A= e^{kt+c_1}

\Rightarrow A=Ce^{kt}         [e^{c_1}=C]

The initial condition is A(0)= A₀,

\therefore A_0=Ce^{0.k}

\Rightarrow C=A_0

\therefore A=A_0e^{kt}.........(1)

Given that the Pb_{209}  has half life of 3.3 hours.

For half life A=\frac12 A_0 putting this in equation (1)

\frac12A_0=A_0e^{k\times3.3}

\Rightarrow ln(\frac12)= 3.3k     [taking ln both sides, ln \ e^a=a]

\Rightarrow k=\frac{ln \frac12}{3.3}

⇒k= - 0.21

Now A₀= 1 gram, 80%=0.8

and A= (1-0.8)A₀ = (0.2×1) gram = 0.2 gram

Now putting the value of k,A and A₀in the equation (1)

\therefore 0.2=1e^{(-0.21)\times t}

\Rightarrow e^{-0.21t}=0.2

\Rightarrow -0.21t= ln(0. 2)

\Rightarrow t= \frac{ln (0.2)}{-0.21}

⇒ t≈7.66

Therefore it will take 7.66 hours for 80% of the lead decay.

3 0
2 years ago
A small container of perfume is opened in a classroom. Soon every student in the room smells the perfume. Explain this in terms
melamori03 [73]

Answer: possibly diffusion

Explanation:

all particles are in motion unless at a certain degree so they'd spread throughout the room diluting as they continue to spread out.

6 0
2 years ago
Identify the major attractive force in HF molecules.A) London Dispersion Forces (LDFs)
Llana [10]

Answer:

C) hydrogen bonding

Explanation:

All atoms and molecules have London Dispersion Forces between them, but they are usually overshadowed but the much stronger forces. In this scenario the major attractive force in HF molecules are hydrogen bonds. Hydrogen bonds are electrostatic forces of attraction found when Hydrogen is bonded to a more electronegative atom such as Oxygen, Chlorine and Fluorine.

6 0
3 years ago
If the pH of vinegar is 3.0, what is the concentration of H+ in vinegar?
Cerrena [4.2K]

Answer: The concentration of H^{+} ions in vinegar is 0.001 M.

Explanation:

Given: pH = 3.0

pH is the negative logarithm of concentration of hydrogen ion.

The expression for pH is as follows.

pH = - log [H^{+}]

Substitute the value into above expression as follows.

pH = - log [H^{+}]\\3.0 = - log [H^{+}]\\conc. of H^{+} = antilog (- 3.0)\\= 0.001 M

Thus, we can conclude that the concentration of H^{+} ions in vinegar is 0.001 M.

5 0
2 years ago
Which would most easily form negative one ions.
irinina [24]

Answer:

Cl

Explanation:

chlorine (2,8,7) is a non metal with highest electronegativity. Hence, it is most likely to form a negative ion with charge −1.

I hope it helps you

8 0
2 years ago
Other questions:
  • What volume of gold would be equal in mass to a piece of copper with a volume of 141 ml? the density of gold is 19.3 g/ml; the d
    14·1 answer
  • A cylindrical specimen of some metal alloy having an elastic modulus of 126 GPa and an original cross-sectional diameter of 3.4
    6·1 answer
  • BRAINLIEST IF ANSWERED IN THE NEXT 5M
    5·1 answer
  • Why is genetic engineering beneficial?
    8·1 answer
  • An unknown metal with a mass of 54.0 g required 773 J of energy in order to change its temperature from 63.0 C to 100.0 C. What
    15·1 answer
  • Please help me I will give you the brain thing and extra points. <br> image below
    8·2 answers
  • Describe what happens to the weight of an astronaut as she travels from the surface of
    12·1 answer
  • 3. The speed of a reaction can be increased by increasing reactant concentration or decreasing
    7·2 answers
  • What mass of HCL is consumed by the reaction of 5. 0 of magnesium?
    8·1 answer
  • Does the percent by mass of each element in a compound depend on the amount of that element used to make the compound? Explain.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!