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
kvv77 [185]
2 years ago
11

On the periodic table, groups are elements with similar *

Chemistry
2 answers:
Semmy [17]2 years ago
7 0

A group is a vertical column of the periodic table, based on the organization of the outer shell electrons. Elements fits into a group of elements with similar properties.

Lelu [443]2 years ago
6 0

Answer:

atomic number

Explanation:

hope this will help u(maybe)

You might be interested in
Can someone please help me? i will give brainlist
MA_775_DIABLO [31]

Answer:

B. Design homes that can be built on stilts where flooding is likely to occur.

C. Replace power lines that have been damaged by severe weather.

Explanation:

Hope this helps! :)

5 0
2 years ago
Well its an easy one but it hard for me so plz​
lana66690 [7]

Answer:

need more so we can answer

Explanation:

7 0
3 years ago
Which statement describes the relationship between microscopic and macroscopic phenomena?
sesenic [268]

Answer:

It's d

Explanation:

They have two different meaning and jobs

8 0
2 years ago
9. Thallium-208 has a half-life of 3.053 min. How long will it take for 120 g of it to decay
damaskus [11]

Answer:

12.213 minutes will be taken for 120 g-Thalium-208 to decay to 75 grams.

Explanation:

Radioactive isotopes decay exponentially in time, the mass of the isotope (m(t)), in grams, is described by the formula in time (t), in minutes:

m(t) = m_{o}\cdot e^{-\frac{t}{\tau} } (1)

Where:

m_{o} - Initial mass of the isotope, in grams.

\tau - Time constant, in minutes.

In addition, the time constant associated with the isotope decay can be described in terms of half-life (t_{1/2}), in minutes:

\tau = \frac{t_{1/2}}{\ln 2} (2)

If we know that m(t) = 7.5\,g, m_{o} = 120\,g and t_{1/2} = 3.053\,min, then the time taken by the isotope is:

\tau = \frac{t_{1/2}}{\ln 2}

\tau = \frac{3.053\,min}{\ln 2}

\tau \approx 4.405\,min

t = -\tau \cdot \ln \frac{m(t)}{m_{o}}

t = -(4.405\,min)\cdot \ln \left(\frac{7.5\,g}{120\,g} \right)

t \approx 12.213\,min

12.213 minutes will be taken for 120 g-Thalium-208 to decay to 75 grams.

4 0
3 years ago
A rock was found on the side of the road. The rock was very crumbly, it had layers, and contained
Mazyrski [523]

Answer:

D

Explanation:

8 0
2 years ago
Other questions:
  • What 2 things are conserved in every reaction?
    14·1 answer
  • In general, non-spontaneous reactions __________.
    14·1 answer
  • Select the correct answer. A certain reaction has this form: aA bB. At a particular temperature and [A]0 = 2.00 x 10-2 Molar, co
    12·1 answer
  • Hydrogen sulfide,H2S, is a very toxic gas with a smell of rotten eggs. using the following: H2S+3/2 O2=SO2+H2O H2+1/2O2=H2O S+O2
    8·1 answer
  • a sample of gas with a volume of 2.0 L at STP is found to have a mass of 1.43 g calculate the molecular mass of this gas. is it
    12·1 answer
  • What is the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and 65% oxygen?
    15·1 answer
  • I really need an answer please help
    12·2 answers
  • Can someone help with #6 <br> Will mark brainliest too!
    13·1 answer
  • PLEASE HELP ME ASAP I WILL MARK BRAINLYEST AND I WILL ALSO GIVE 5 EXTRA POINTS
    5·2 answers
  • What reagent is used to detect the presence of starch?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!