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
eduard
3 years ago
7

Which of the following is the correct scientific notation for 0.000451 g?

Chemistry
1 answer:
german3 years ago
6 0
4.5 x 10-4
An easy trick is to count the zeros.
You might be interested in
An arson investigator is called to a suspicious fire that destroyed a house. The arson
Rufina [12.5K]

Answer:

potassium

Explanation:

5 0
3 years ago
Write the complete chemical formula for the unknown compound.
Zinaida [17]

The complete chemical formula for the unknown compound will be  C_2H_6

<h3>Chemical formula</h3>

The chemical formula of the compound is  C_2H_x and x is supposed to be a whole number.

In the analysis, C = 2.22 moles and H = 6.7 moles

Dividing both by the smallest: C = 1 and H = 3

Thus, the empirical formula of the compound will be CH_3

But since the compound is  C_2H_x, it means both C and H are multiplied by 2.

The chemical formula will, therefore, be C_2H_6

More on chemical formulas can be found here: brainly.com/question/11995171

#SPJ1

5 0
2 years ago
Moles of Zn(NO3)2 in 131.50g of this substance.
Degger [83]
<span>number of moles= mass / molecular mass
mass=131.50g
molecular mass of Zn(NO3)2 =189.39 g/mol
number of moles = 131.50 g/189.39 g/mol =0.69433 mol</span>
3 0
4 years ago
Read 2 more answers
Lithosphere: Odd one out . Analyze each part of the rectangle. One of the parts will be different from the others. Shade the par
patriot [66]

The characteristics of the lithosphere found that the frame that is out of sequence is:  

       last frame: Iron

The lithosphere is the upper part of the Earth, it is composed of two parts: the crust and the upper part of the mantle, up to the ionosphere, an area of ​​material in a plastic state.

The lithosphere is the most important part for since all the life processes on the planet occur in it, the depth of the lithosphere is greater in the continental part about 250 km than in the oceanic part 150 km, this is It is because it is floating above the stratosphere.

Let's analyze each part of the picture

1. Rigid rocks in the upper part of the mantle.

The lithosphere is the coldest part of the plant, which is why the rocks have solidified, forming a rigid layer of rocks that floats on the mantle.

2. Crust.

It is another name given the uppermost part of the lithosphere, it is formed by a solid area,

3. Tectonic plates.

The lower part of the lithosphere is on an area in a very hot platic state, therefore there is a thermal gradient between the convection current of the asthenosphere and the thermal conduction of the lithosphere, these thermal gradients create breaks or divisions in the upper layer that we call plate tectonics

4.) solid crust of the Earth

The lithosphere is by definition the solid part of the Earth, which is why it is also called solid crust, but not rigid.

5) Continents.  

They are the highest parts of the lithosphere, they are above the average height of the oceanic that forms the liquid part that fills the lower spaces of the lithosphere, in general it is formed by rocks of granite composition

6) Earthquakes

The plates of the lithosphere can move between it, in some cases these plates are locked (stopped) accumulating energy at some point the rocks that form part and the plates move abruptly this movement is called an earthquake

7) Volcanoes

The lower part of the lithosphere is hotter, in some parts where the upper rock is more fragile, this heat can fragment them, which is why the molten rock called magna has an exit path towards the earth's surface, in general the fragmentation processes and rupture is accompanied by high pressures that make the surface rise in height, these structures are called volcanoes, the vast majority are near the contact zone of the tectonic plates,

8) Iron  

This is a chemical element that is one of the constituents of the lithospheres, but it is not an essential part of its structure. Iron, for being a heavy element, is believed to be fundamentally in the Earth's nucleus, in the lithosphere it only forms 4.7% of its structure. This is why this box is out of sequence of the second rectangle

Consequently with the characteristics of the lithosphere found that the frame that is out of sequence is:

              last frame: Iron

learn more about lithosphere here:

brainly.com/question/14631600

5 0
3 years ago
In which of the following examples would you see a chemical change occur?
asambeis [7]
A or be i cant be certain which is correct but it think its one of the lm
5 0
3 years ago
Other questions:
  • Why won’t sugar and Citric acid leave a sediment in salad dressing??
    15·2 answers
  • Which of the following bases is the WEAKEST? The base is followed by its Kb value. Which of the following bases is the WEAKEST?
    14·1 answer
  • Sort the functions of life based on whether they are performed by an amoeba or a plant.makes food fromcarbon dioxide,water, and
    7·2 answers
  • Based on these two statements, what conclusion could Dalton draw about the relative masses of oxygen and hydrogen atoms? How man
    5·1 answer
  • A meteor that falls to earth is called a(n) ____.
    8·1 answer
  • Compare 1 mole of H2, 1 mole of O2, and 1 mole of F2. (a) Which has the largest number of molecules? Explain why. (b) Which has
    10·1 answer
  • What is a property of covalent compounds
    7·2 answers
  • Which of the following molecules would you expect to have a dipole moment of zero? a,CH2 Ch3
    15·1 answer
  • If the graph of y = a x 2 + b x + c does not intersect the x -axis, then what is true about the roots? Both are real roots. Both
    11·1 answer
  • Any material that exerts magnetic force is considered a magnet true or false?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!