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kaheart [24]
3 years ago
11

Which step of the scientific method involves obtaining information through the senses?

Chemistry
2 answers:
Lana71 [14]3 years ago
4 0

Answer:

The step is called observation

Explanation

The scientific method is a process where the steps are:

1. observation 2. hypothesis 3.experimental proposal 4. data collection  5. analyzing data  6. accept pr refuse the hypothesis

The best way to pick up information about a phenomena is by observations of the details in the environment and in some cases depending the phenomena we also can collect information by other senses like smell, taste and hearing to the aim of understand and explain a possible hypothesis of the phenomena.

AnnyKZ [126]3 years ago
3 0
When you are making observations

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When electrons move through a series of electron acceptor molecules in cellular respiration ________.
Verizon [17]

Answer:

oxygen is reduced to form water.

Explanation:

Cellular respiration

It is the set of reactions in which the ac. Pyruvic produced by glycolysis is split into CO2 and H2O and 36 ATP are produced. In eukaryotic cells breathing is performed in the mitochondria. It occurs in two stages:

- PIRUVATE OXIDATION

- AC CYCLE TRICARBOXYL

The "problem" with fermentation is that, by using organic molecules as terminal electron acceptors and having to dispose of the resulting product (lactic acid / ethanol) as waste, the potential energy of these compounds is lost.

The alternative solution is to use some non-organic molecule that can accept electrons and thus become a reduced molecule. Oxygen is perfect for this, because after receiving the electrons it combines with two protons, thus becoming the perfect liquid residue for the environment: H2O.

3 0
3 years ago
Please answer each thank you
liubo4ka [24]

Answer:

Properties of Metals:      

- Shiny

-Malleable

-Good Conductors of electric current

- Good conductors of heat

Properties of Non-metals:

- Dull

- Not Malleable

- Bad conductors of electric current but good electric insulators

- Poor conductors of heat

Note: The first dash for the Properties of metals goes with the first dash of Properties of Non-metals and so on.

3 0
4 years ago
2H2 + O2 --&gt; 2H2O<br> How many grams of oxygen gas are required to produce 90. g of water?
Travka [436]

Answer:

80g

Explanation:

2H2 + O2 —> 2H2O

MM of H2O = (2x1) + 16 = 2 + 16 = 18g/mol

Mass conc. of H2O from the balanced equation = 2 x 18 = 36g

MM of O2 = 16 x 2 = 32g/mol

From the equation,

32g of O2 reacted to produce 36g of H2O.

Therefore Xg of O2 will react to produce 90g of H2O i.e

Xg of O2 = (32x90)/36 = 80g

8 0
3 years ago
Arrange the isotopes of sulfur and phosphorus in order of decreasing number of neutrons.
Monica [59]
I do not believe you're asking this...
OK. Sulfur has a total of 24 isotopes. Every isotope has 16 protons and the number of neutrons ranges from 10 to 33 inclusive.
Phosphorus has a total of 23 isotopes. They have 15 protons, and between 9 and 31 neutrons inclusive. So here we go.

S-49
S-48
S-47, P-46
S-46, P-45
S-45, P-44
S-44, P-43
S-43, P-42
S-42, P-41
S-41, P-40
S-40, P-39
S-39, P-38
S-38, P-37
S-37, P-36
S-36, P-35
S-35, P-34
S-34, P-33
S-33, P-32
S-32, P-31
S-31, P-30
S-30, P-29
S-29, P-28
S-28, P-27
S-27, P-26
S-26, P-25
P-24

If you're looking for STABLE isotopes, then the list is much smaller.
S-36
S-34
S-33
S-32, P-31

6 0
4 years ago
Read 2 more answers
Which of the following methods can be used to completely separate a solution containing alcohol and water?
SOVA2 [1]

Answer:

evaporation and distillation

Explanation:

the liquids have different booking points that is why it works

6 0
3 years ago
Read 2 more answers
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