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Nady [450]
3 years ago
7

When scientists use one of their five senses to gather information, they are A. making an observation. B. making an inference. C

. predicting a relationship D. drawing a conclusion.
Chemistry
2 answers:
Goshia [24]3 years ago
7 0

A. making an observation.

Explanation:

When scientists use one of their five sense to gather information, they are simply making an observation.

Most physical properties of matter are studied using sense of taste, of feel, sight, hearing and smell.

  • Observation is the act of making a measurement or studying.
  • It helps to investigate particular phenomenon in nature.
  • Most observations made with our senses are usually qualitative in nature.
  • They cannot be assigned values like quantitative ones.

learn more:

Observations brainly.com/question/5096428

#learnwithBrainly

Stels [109]3 years ago
6 0

A. Making and observation

Explanation:

When scientists use one of their five senses to gather information, they are making an observation.

Much of scientific knowledge has been gained through observation. By using the senses of sight, smell, touch, taste, and hearing, there are many things about the world that can be learned.

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A liquid solvent is added to a flask containing an insoluble solid. The total volume of the solid and liquid together is 80.0 mL
Lyrx [107]

Answer:

111.44 g

Explanation:

We'll begin by calculating the volume of the solvent. This can be obtained as follow:

Mass of solvent = 21 g

Density of solvent = 0.865 g/mL.

Volume of solvent =?

Density = mass /volume

0.865 = 21 /volume of solvent

Cross multiply

0.865 × volume of solvent = 21

Divide both side by 0.865

Volume of solvent = 21 / 0.865

Volume of solvent = 24.28 mL

Next, we shall determine the volume of the solid. This can be obtained as follow:

Volume of solvent + solid = 80.0 mL.

Volume of solvent = 24.28 mL

Volume of solid =?

Volume of solid = (Volume of solvent + solid) – (Volume of solvent)

Volume of solid = 80 – 24.28

Volume of solid = 55.72 mL

Finally, we shall determine the mass of the solid. This can be obtained as follow:

Density of solid = 2.00 g/mL.

Volume of solid = 55.72 mL

Mass of solid =.?

Density = mass / volume

2 = mass of solid / 55.72

Cross multiply

Mass of solid = 2 × 55.72

Mass of solid = 111.44 g

Therefore, the mass of the solid is 111.44 g

8 0
3 years ago
What would you have to do to the substance in
jenyasd209 [6]
By using thermal energy which is also heat energy the substance in cup A will melt becoming a liquid behaving like the substance in cup B
5 0
2 years ago
I’m so lost please help
ExtremeBDS [4]

C=4

D=-19

Explanation:

2exp-25/5exp-7= 4exp-19

7 0
2 years ago
How many chlorine atoms would be in 6.02 X 10^23 units of gold III chloride
Pepsi [2]

Answer:

The number of chlorine atoms present in 6.02 \times 10^{23} units of gold III chloride is 18.066 \times 10^{23}

Explanation:

Formula of Gold (III) chloride: AuCl_{3}

<em>Avogadro Number</em> : Number of particles present in <u>one mole</u><u> </u>of a substance.

{N_{0}} =6.022 \times 10^{23}

Using,

n(moles)=\frac{Given\ number\ of\ particles}{N_{0}}

n =\frac{6.02\times 10^{23}}{6.022\times 10^{23}}

= 1 mole(0.9999 , nearly equal to 1 )

The given Gold III chloride sample is 1 mole in amount.

6.022 \times 10^{23}  = 1 mole of AuCl_{3}

In this Sample,

1 mole of AuCl_{3} will give = 3 mole of Chlorine atoms

1 mole of Cl contain = 6.022 \times 10^{23}

3 mole of Cl contain = 6.022 \times 10^{23}\times 3

3 mole of Cl contain =18.066 \times 10^{23}

So,

The number of chlorine atoms present in 6.02 \times 10^{23} units of gold III chloride is 18.066 \times 10^{23}

8 0
3 years ago
Molar mass of Fe2(CO3)3
Y_Kistochka [10]
Use the p table and take 2 times the atomic mass of Fe and then 3 times the atomic mass of C and 9 times the atomic mass of O
So I know that O= 16×9
C=12×3
Fe= Then add all the products up to find molar mass
5 0
3 years ago
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