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
BARSIC [14]
3 years ago
8

PLS HELP THIS IS TO HARD PLS

Chemistry
1 answer:
lions [1.4K]3 years ago
7 0
The correct answer is D because they are all in the same group and all elements in the same groups as each other are always very similar.
You might be interested in
A slide 3.3 m long makes an angle of 32° with the ground. How high is the top of the slide above the ground?
Lyrx [107]
Sin 32 = height/3.3 m
height = sin 32 (3.3 m)
height = 1.75 m
7 0
3 years ago
Manganese nodules are an example of A. Terrigenous sediment B. Biogenous sediment C. Hydrogenous sediment D. Oil products
Tju [1.3M]
I think the correct answer would be hydrogenous sediment. These sediments are produced when minerals that are dissolved solidify via reaction with water, especially seawater. Other examples are evaporites and oolites. Hope this answers the question.
4 0
3 years ago
Read 2 more answers
In a _________the molecules are very close together
Maurinko [17]
Is a solid because liquids are not is not that close and gas is very far apart.
4 0
3 years ago
PLEASE ANSWERRRRRR
Kay [80]

Electromagnetic wave travels faster through air than metal.

Option A

<u>Explanation:</u>

There are different kinds of wave energy. The most significant are electromagnetic and mechanical waves. The mechanical waves propagate through the medium by transfer of energy by vibrating of particles in medium.

So, the more number of particles present in the medium, the more fast the mechanical wave can propagate. So the mechanical waves travel faster in metals consisting of more number of free charge carriers. But electromagnetic waves does not need any of the medium to propagate. So it can travel faster in air than in metals.

7 0
4 years ago
To what temperature should 2.3L of a gas at 25degree Celsius be heated in order to expand its volume to 4 L under constant press
lakkis [162]

Answer:

518.52K

Explanation:

Charles law, which describes the direct relationship between the volume and the temperature of a gas when the pressure is constant, will be used for this question. The Charles law equation is:

V1/T1 = V2/T2

Where; V1 is the volume of the gas at an initial state (Litres)

T1 is the absolute temperature of the gas at an initial state (Kelvin)

V2 is the volume of the gas at a final state (Litres)

T2 is the absolute temperature of the gas at a final state (Kelvin)

According to the question, V1 = 2.3L, T1 = 25°C, V2 = 4L, T2 = ?

We need to convert the temperature to the absolute temperature unit in Kelvin (K) i.e.

T(K) = T(°C) + 273.15

T(K) = 25°C + 273.15

T1 (K) = 298.15K

To find for T2 in the equation, we make T2 the subject of the formula:

T2 = V2 × T1 / V1

T2 = 4 × 298.15 / 2.3

T2 = 1192.6/2.3

T2 = 518.52

Thus, the temperature must be heated to 518.52K in order to expand to a volume of 4L. This answer is in accordance to Charles law that the volume increases with increase in temperature and vice versa.

5 0
3 years ago
Other questions:
  • What is a function of water in a cell?                                                               A) producing lipids and car
    10·1 answer
  • Describe the development of the modern periodic table
    14·1 answer
  • How many moles of oxygen are required to produce 37.15 g CO2?
    8·2 answers
  • Atomic bombs are a type of nuclear weapon. List three reasons people might be fascinated by something as dangerous as a nuclear
    10·2 answers
  • A solution is made by dissolving 373.5 g of Pb(NO3)2 (molar mass: 331.2 g/mol) in 2.00 × 103 g of water. What is the molality of
    14·2 answers
  • Kevin activates an instant hot pack to put in each glove while he trains for the Iditarod dog sled race in Alaska. When the hot
    10·1 answer
  • Pick out the metals which can react with magnesium sulphate solution. Justify the answer.
    5·1 answer
  • According to the chart below, which element makes up a large portion of the
    9·2 answers
  • Which of the following would be the best representation of input energy and then
    6·1 answer
  • Balancing equations<br> I'll give brainliest.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!