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
chubhunter [2.5K]
3 years ago
7

Which metal reacts quickest in this group (Li, Na, K, Rb and Cs) Why?

Chemistry
1 answer:
Tamiku [17]3 years ago
3 0
Ok so all are in the alkali family also they are all metals and in group 1 but I think the one that might reacts quickest is Li because it has less AMU
You might be interested in
A sample of water at 100°C is converted to steam after absorbing 820 kJ of heat. How grams of H2O are contained in the sample? A
Varvara68 [4.7K]
Since water is already at 100<span>°C all the energy is used to evaporate it. 
Now we can calculate how many </span>mols of water are evaporated with 820kJ.
N= \frac{820}{41} =20 mol
We calculated that we got 20 mols of water evaporated. Now, all we have to do is find how many grams is a mol of water. Molar mass of water is <span>20.16 g/mol.
</span>The final answer is:
m=20*20.16=403.2g




7 0
3 years ago
The Earth rotates about its axis from west to east. What piece of evidence about the Moon can we use to support this statement?
Debora [2.8K]
The Earth's rotation has no relation to the phases of the moon.
Like everything else in the sky, the moon rises in the east just like the stars, planets, and the sun.
8 0
3 years ago
Read 2 more answers
Someone help me out with this brain pop ⚠️
erik [133]
The answer is b because if you’re fan is blowing and you spend it the opposite way, the air will be cooler
6 0
2 years ago
Design a test to determine whether thorium-234 also emits particles. First, explain how Rutherford’s experiment measured positiv
liubo4ka [24]

The characteristics of the α and β particles allow to find  the design of an experiment to measure the ²³⁴Th particles is:

  • On a screen, measure the emission as a function of distance and when the value reaches a constant, there is the beta particle emission from ²³⁴Th.
  • The neutrons cannot be detected in this experiment because they have no electrical charge.

In Rutherford's experiment, the positive particles directed to the gold film were measured on a phosphorescent screen that with each arriving particle a luminous point is seen.

The particles in this experiment are α particles that have two positive charge and two no charged is a helium nucleus.

The test that can be carried out is to place a small ours of Thorium in front of a phosphorescent screen and see if it has flashes, with the amount of them we can determine the amount of particle emitted per unit of time.

Thorium has several isotopes, with different rates and types of emission:

  • ²³²Th emits α particles, it is the most abundant 99.9%
  • ²³⁴Th emits β particles, exists in small traces.

In this case they indicate that the material used is ²³⁴Th, which emits β particles that are electrons, the detection of these particles is more difficult since it has one negative charge, it has much lower mass, but they can travel further than the particles α, therefore, for what type of isotope we have, we can start measuring at a small distance and increase the distance until the reading is constant. At this point all the particles that arrive are β, which correspond to ²³⁴Th.

Neutron detection is much more difficult since these particles have no charge and therefore do not interact with electrons and no flashing on the screen is varied.

In conclusion with the characteristics of the α and β particles we can find the design of an experiment to measure the ²³⁴Th particles is:

  • On a screen, measure the emission as a function of distance and when the value reaches a constant, there is the β particle emission from ²³⁴Th.
  • The neutrons cannot be detected in this experiment because they have no electrical charge.

Learn more about radioactive emission here: brainly.com/question/15176980

7 0
2 years ago
a. Order the following liquids in order from least dense to most dense: Dish Soap, Rubbing Alcohol, Milk, Corn Syrup.
Anettt [7]

dish Soap,Corn Syrup,Rubbing Alcohol, Milk,

7 0
2 years ago
Other questions:
  • Which of the following describe chemical properties?
    9·2 answers
  • What are the reactants to burning paper and the products
    7·1 answer
  • Rutherford proposed that atoms have positive nuclei. Which statement correctly describes the nucleus of an atom?
    12·2 answers
  • Consider the assumption that the four molecules of interest have approximately the same molar mass and very similar polarizabili
    5·1 answer
  • What is the correct way to write .00095 in scientific notation
    13·2 answers
  • Please help! Thank you!
    5·2 answers
  • Which type of wave to support the idea that light is also made of waves
    10·1 answer
  • What is a substance consisting of two or more elements?
    5·1 answer
  • ASAP 100 POINTS Which molecules carries instructions for inherited traits
    13·2 answers
  • How many grams of KNO3 are required to prepare 0.250 L of 0.70 M solution?​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!