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
inna [77]
3 years ago
6

dmitri mendeleev's periodic law states that chemical and physical properties repeat themselves in groups of ?

Chemistry
2 answers:
Ket [755]3 years ago
8 0
Dmitri mendeleev's periodic law states that chemical and physical properties repeat themselves in groups of 8. 
zubka84 [21]3 years ago
3 0
Dmitri Mendeleev's periodic law states that chemical and physical properties repeat themselves in groups of 8.
You might be interested in
What is the relationship between Celsius scale and Kelvin scale of temperature ? very sort answer​
inna [77]

Answer:

Celsius + 273 = Kelvin

Explanation:

5 0
3 years ago
Can some one help me in this I hope this will be easy for you :)
kramer

Answer:

c) i)  Mg²⁺   ii) O²⁻

Explanation:

I don't know the answer to Q7. because you don't show the diagram

5 0
3 years ago
Determine the number of moles of carbon dioxide gas, water, and sodium chloride formed by the reaction of 42.0 grams of sodium b
brilliants [131]

Answer: .45 moles of CO2, H20,and NaCl

Explanation:

5 0
3 years ago
1. A 2-kg bowling ball sits on top of a building that is 40 meters tall. (5 pts) Circle one: KE / GPE / both ( can you show work
masha68 [24]
Potential energy is energy due to an object's height above the ground.
Potential energy = mass x gravity x height
Kinetic energy is energy due to the motion of the object.
Kinetic energy = 1/2 x mass x velocity²

1.
The ball is not moving and is at a height above the ground so it has only potential energy.
P.E = 2 x 9.81 x 40
P.E = 784.8 J

2.
The ball is moving and has a height above the Earth's surface so it has both kinetic and potential energy.
P.E = same as part 1 = 784.8 J
K.E = 1/2 x 2 x 5²
K.E = 25 J

3.
The ball has no height above the Earth's surface and is moving so it has only kinetic energy.
K.E = 1/2 x 2 x 10²
K.E = 100 J

4.
50000 = 1/2 x 1000 x v²
v = 10 m/s

5.
39200 = 200 x 9.81 x h
h = 20.0 m

6.
12.5 = 1/2 x 1 x v²
v = 5 m/s
98 = 1 x 9.81 x h
h = 10.0 m
3 0
3 years ago
How much heat is added if 0.0318g of water is increased in temperature by 0.364 degrees C?
SSSSS [86.1K]

Answer:

0.04838J

Explanation:

Heat is a form of energy that is transferred from one body to another as the result of a difference in temperature between the bodies , here heat is added to the water as a result of temperature change of 0.364 degreesC

Given:change in temperature=0.364

Mass of water=0.0318g

But we need specific heat capacity of water which is

4.2 J/g°C

Then we can calculate How much heat is added by using below formula

Energy = Mass * specific heat capacity *(change in temperature)

energy =0.0318g* 4.18g*0.364

=0.04838J

8 0
3 years ago
Other questions:
  • a beaker with water and the surrounding air are all at degrees Celsius. After ice cubes are placed in the water, heat is transfe
    8·2 answers
  • Why can the same earthquake have 2 different ratings on the Richer scale and the moment magnitude scale?
    8·2 answers
  • What are the most chemically stable elements (in terms of reactivity) on the periodic table?
    10·1 answer
  • Which of the following is a pure substance?
    5·1 answer
  • when a substance donates a proton during a chemical reaction, that substance can be classified as a(an) ___ ?
    10·1 answer
  • Estimate the yearly increase in the average atmospheric concentration of carbon dioxide. Express the answer in parts per million
    14·1 answer
  • Describe the effect of cooling a gas in a container?
    9·1 answer
  • Which element is extracted from bauxide ore<br>​
    5·2 answers
  • the following punnett square shows a cross between two hybrid flowers. if the flowers show incomplete dominance, what fraction a
    15·2 answers
  • What is the temperature if 2L of 3moles HCl react with 2atm?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!