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
arlik [135]
3 years ago
12

When making a guess, you are forming a_______.

Chemistry
2 answers:
maw [93]3 years ago
8 0
When making a guess, you are forming a hypothesis. A hypothesis is a statement you make based on your observations of a certain phenomenon, so it's an educated guess. You will then carry out an experiment whose results will hopefully support your hypothesis.
Sergio [31]3 years ago
6 0

When making a guess, you are forming a hypothesis.

A hypothesis is a statement you make based on your observations of a certain phenomenon, so it's an educated guess.

You will then carry out an experiment whose results will hopefully support your hypothesis.


Explanation:

Hypothesis is a supposition or projected clarification created on the premise of restricted proof as a place to begin for more investigation.A hypothesis may be a tentative, testable answer to a scientific question. Once a person encompasses a scientific question she is fascinated by, the person reads up to search out out what's already far-famed on the subject. Then she uses that data to make a tentative answer to her scientific question. Typically folks discuss with the tentative answer as "an educated guess."

You might be interested in
To aid in the prevention of tooth decay, it is recommended that drinking water contains 0.900 ppm fluoride (F-). A) How many g o
Romashka-Z-Leto [24]

Answer:

a) <u>1.740 g</u> of F- must be added to a cylindrical water reservoir

b) Grams of sodium fluoride, NaF, that contain this much fluoride:

3.84 g

Explanation:

Step 1. calculate the volume of the tank:

Volume of cylinder =

\pi  r^{2}h ,

Here r = radius of the cylinder = d/2

h = depth = 21.80m

r=\frac{d}{2}

=\frac{3.36x10^{2}}{2}

= 168 m

Volume =

=\frac{22\times 168^{2}\times 21.80}{7}

=1.93\times 10^{6} m^{3}

2.Convert ppm to g/m3 and Solve for mass of F-

1ppm = 1g/m^{3}

0.9ppm = 0.9g/m^{3}

Because both ppm and g/m3 are same quantity .

g/m^{3} =\frac{mass\ of\ F-(g)}{Volume\ m^{3}}\times 10^{6}

0.9 =\frac{mass\ of\ F-}{1.93\times 10^{6} m^{3}}\times 10^{6}

mass\ of\ F- =1.740g

mass of F- required = 1.740 g

3. Apply <u>mole concept </u>to calculate grams of sodium fluoride produced

mass of 1 mole of F2 = 38 g

mass of 1 mole of NaF = 42 g

(from periodic table calculate molar mass)

2Na+F_{2}\rightarrow 2NaF

Here 1 mole of F2 produce = 2 mole of NaF

So,

38 g  of F2 produce = 2 x 42 g of NaF

38 g of F2 produce = 84 g of NaF

1 g of F2 produce = 84/38 g of NaF

1.74 g F2 produce =

\frac {84}{38}\times 1.74

1.74 g F2 produce = 3.84 g of NaF

3.84 g of NaF is produced

3 0
3 years ago
PLEASE ANSWER
lyudmila [28]

Answer:

4 hours

Explanation:

7 0
3 years ago
Read 2 more answers
An air mattress is filled with 0.55 moles of air. The air inside the mattress has a temperature of 295 K and a gauge pressure of
Nitella [24]

Answer: 385.4132857

Explanation:

Using the equation, PV=nRT, you can solve this problem.

P= 3.5 kPa      V=?    n= 0.55 moles of air     T= 295K    R= 8.314 (L kPa/mol K)

We use the constant rate of <u>8.314</u> because we are using kilopascals in this problem.

Using simple algebra we get-

V = (0.55 moles)(8.314 L kPa/mol k)(295 K) / 3.5 kPa

Using the calculator, we would get the answer of 385.4132857 L.

And whatever the significant figure is asked for, for example, 3 significant figures: the answer would be 385 liters.

3 0
3 years ago
Why a person bitten by a snake can not drink alcohol​
AfilCa [17]
Alcoholic liquors are harmful to persons bitten by venomous snakes." The alcohol acts first as a stimulant, speeding up the circulation, quickly distributing the poison through the body. When the effect wears off it becomes a depressant, lowering the victim's resistance,
8 0
3 years ago
When driving a truck,is fuel crucial?
Natali [406]

Answer:

The answer is yes.

Explanation:

When driving any type of motorized vehicle, fuel is importatn. Fuel is what it runs on, so without it it wouldn't run. With trucks a lot more is needed because trucks are bigger, and tend to carry more than a little car does.

6 0
3 years ago
Other questions:
  • What are the three main parts to an electrons “address” used in the current atomic theory that describe an electrons location?
    13·1 answer
  • If the atom is assumed to be a sphere, what is the volume in cm3 of a single copper (cu) atom?
    13·1 answer
  • What are the three particles of an atom
    7·2 answers
  • At what speed do gamma Rays travel?
    14·1 answer
  • Which of the following species is not capable of acting as an Arrhenius acid in aqueous solution?
    9·1 answer
  • How many moles of nitrogen gas would be produced if 3.27 moles of copper(II) oxide were reacted with excess ammonia in the follo
    10·1 answer
  • Ren runs a hamburger stand and needs to clean up a season’s worth of grease buildup on the range hood over his griddle. Explain
    13·2 answers
  • How many grams of Carbon are there in 1.95 moles of Glucose (C6H12O6)?
    8·1 answer
  • Iron + --&gt; iron sulphate + copper What is missing ? Iron sulphate Copper sulphate Copper oxideIron oxide
    14·1 answer
  • PLEASE HELP AND SHOW WORK ASAP!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!