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
Nostrana [21]
3 years ago
15

What is the reason why an investigation is planned

Chemistry
1 answer:
denpristay [2]3 years ago
4 0
It's planned so you know what you are doing during the experiment. If you don't plan something ahead of time then you forget what you need to do. Also you need to remember specific formulas and numbers.
You might be interested in
Consider the nuclear equation below. Superscript 22 subscript 11 upper N a right arrow superscript 22 subscript 10 upper N e plu
natali 33 [55]

Answer:

+1

Explanation:

For the equation to be balanced, the total mass number and the total atomic number on both side of the equation but be equal.

This is illustrated:

For the mass number:

Left side: 22

Right side: 22 + 0 = 22

For the atomic number:

Left side: 11

Right side: 10 + x

11 = 10 + x

Collect like terms

x = 11 - 10

x = 1

See attachment for further explanation.

8 0
3 years ago
Read 2 more answers
Whic number of the periodic table is the atomic number and which number is the atomic mass?
Anettt [7]

Answer:

The mass number (represented by the letter A) is defined as the total number of protons and neutrons in an atom. Consider the element helium. Its atomic number is 2, so it has two protons in its nucleus.

The atomic mass of a single atom is simply its total mass and is typically expressed in atomic mass units or amu. By definition, an atom of carbon with six neutrons, carbon-12, has an atomic mass of 12 amu.

5 0
2 years ago
A water molecule is made of two atoms of hydrogen and one atom of oxygen, as shown in the image. one red sphere attached to two
ira [324]

Answer:

model of water

Explanation:

5 0
2 years ago
True or false that thrust is a force that propels the plane in a desired direction pls helppp fast!
hjlf

Answer:

True

Explanation:

Thrust is the force which moves an aircraft through the air. Thrust is used to overcome the drag of an airplane, and to overcome the weight of a rocket. Thrust is generated by the engines of the aircraft through some kind of propulsion system.

8 0
3 years ago
Which two properties are explained by the pool-of-shared-electrons model for metals?
Svetllana [295]
I believe it is C but if not that A
5 0
3 years ago
Other questions:
  • Solid aluminum (AI) and oxygen (O_2) gas react to form solid aluminum oxide (Al_2O_3). Suppose you have 7.0 mol of Al and 9.0 mo
    7·1 answer
  • In a chemical reaction , atoms are created/rearranged. The atom are joined together in the same/different arrangements after the
    9·1 answer
  • A 110.-g sample of copper (specific heat capacity 0.20 J/C g) is heated to 82.4C and then placed in a container of water at 22.3
    5·1 answer
  • What is a solute in science
    5·2 answers
  • Is my answer right?
    9·1 answer
  • Is a covalent bond the same thing as a covalent compound ?
    12·1 answer
  • What do punnet squares do
    15·1 answer
  • Is water a element or compond <br> and is it a homogeneous or heterogeneous
    8·2 answers
  • Give reasons :
    15·2 answers
  • Which statement best explains why the virus that causes dog flu does not infect humans? In other words, why is this type of flu
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!