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
xenn [34]
3 years ago
6

Scientific hypotheses differ from scientific theories in that they are

Chemistry
1 answer:
goldenfox [79]3 years ago
7 0

Answer:

A tentative explanations that need further evaluation

Explanation:

In scientific experiment, hypothesis and theories are used. Both are important but significantly different from one another. Scientific hypothesis is a tentative explanation to a problem that needs further evaluation by testing via experimentation. This means that a hypothesis must be testable and subject to proper investigation.

On the other hand, theories are tested explanation. That is, theories are not subject to testing because they are well backed up by data.

You might be interested in
What do the elements in each pair have in common? k, kr be, mg ni, tc b, ge al, pb?
tensa zangetsu [6.8K]
The pairs are:
K, Kr - Same period
Be, Mg - Same group
Ni, Tc - Both are transition metals
B, Ge - Both are metaloids
Al, Pb - Both form inert oxides
4 0
3 years ago
In a second-order reaction (one that is second order in one reactant), cutting in half the concentration of that reactant will h
svlad2 [7]
A second order reaction varies with the square of the concentration of the reactant. Therefore, halving the concentration will reduce the rate of reaction by a factor of 4.
The answer is E.
4 0
3 years ago
Read 2 more answers
What happens to ice as it warms up
son4ous [18]
Ice starts to melt and turns into water as it melts
7 0
3 years ago
Read 2 more answers
A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts with oxygen gas (O2) to prod
Olin [163]

Answer:

The answer is 6.25g.

Explanation:

First create your balanced equation. This will give you the stoich ratios needed to answer the question:

2C8H18 + 25O2 → 16CO2 + 18H2O

Remember, we need to work in terms of NUMBERS, but the question gives us MASS. Therefore the next step is to convert the mass of O2 into moles of O2 by dividing by the molar mass:

7.72 g / 16 g/mol = 0.482 mol

Now we can use the stoich ratio from the equation to determine how many moles of H2O are produced:

x mol H2O / 0.482 mol O2 = 18 H2O / 25 O2

x = 0.347 mol H2O

The question wants the mass of water, so convert moles back into mass by multiplying by the molar mass of water:

0.347 mol x 18 g/mol = 6.25g

8 0
3 years ago
Read 2 more answers
How many grams is 4.2X10^24 atoms of sulfur?
ipn [44]
First find the number of moles of sulfur using dimensional analysis with avogadro’s number as the conversion factor. 4.2*10^24 atoms * (1 mol/6.022*10^23 atoms) = 7.0 mol sulfur. The molar mass of sulfur is 32.06 g/mol, which is found on the periodic table as sulfur’s (S) atomic weight. Use dimensional analysis again with the molar mass of sulfur as the conversion factor. 7.0 mol * 32.06 g/mol = 224.42 g sulfur. Since the problems gives us two significant figures, round the mass of sulfur to 220 grams, or 2.2 * 10^2 g.
7 0
3 years ago
Other questions:
  • According to the information above what is the standard enthalpy of formation for nh3
    10·1 answer
  • Which method preserves an image of a leaf?.
    14·2 answers
  • The wax of a burning candle is a fuel that combines with oxygen in the air. As the fuel is consumed, what happens to most of the
    15·2 answers
  • Sugar is stirred into water to forma a solution. In this case, what names do we give to the sugar and water?
    10·1 answer
  • How are atoms and molecules the same and how are they different?
    5·1 answer
  • The reaction 2Fe + 3Br2 ———> 2FeBr3 is an example of which type of reaction
    10·1 answer
  • PLS SOMEONE HELP ME ANSWER THESE QUESTIONS ARE THEY CONDUCTION OR CONVECTION OR RADIATION
    11·1 answer
  • (15 points) A BOD test is run using 50 mL of treated wastewater mixed with 250 mL of pure water. The initial DO of the mix is 9.
    8·1 answer
  • Butane C4H10 (g),(Hf = –125.7), combusts in the presence of oxygen to form CO2 (g) (Delta.Hf = –393.5 kJ/mol), and H2O(g) (Delta
    6·1 answer
  • 1. What are 4 physical properties of oxygen? <br><br> 2. What are 4 chemical properties of oxygen?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!