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
siniylev [52]
3 years ago
12

When we think about the carbon cycle and human activities, it is important to differentiate between facts and hypotheses. Which

of the following is NOT a fact, but is a hypothesis? A. The amount of carbon dioxide in the atmosphere has increased since 1950. B. Increasing atmospheric carbon dioxide will cause mean global temperature to increase by 2 degrees Celsius over the next century. C. The burning of fossil fuels contributes substantially to the ongoing rise of atmospheric CO2. D. In the past, atmospheric CO2 levels reached levels higher than those observed today.
Chemistry
1 answer:
saw5 [17]3 years ago
4 0

Answer:

B. Increasing atmospheric carbon dioxide will cause mean global temperature to increase by 2 degrees Celsius over the next century.

Explanation:

By definition, a hypothesis is a tentative statement or prediction with little or no experimental test. Hypotheses are always formulated such that they can be rejected if experimental findings are against them.

Hypotheses are predictive and as such, the tone is often in future tense.

<em>From the available options, only option B sound predictive of what might happen in the future. </em>

Hence, the correct option is B.

You might be interested in
What is the empirical formula for naphthalene
german

1.Start with the number of grams of each element, given in the problem.

2.Convert the mass of each element to moles using the molar mass from the periodic table.

3.Divide each mole value by the smallest number of moles calculated.

4.Round to the nearest whole number. This is the mole ratio of the elements and is.

5 0
3 years ago
Is it true or false I need help.
dsp73

Answer:

true

Explanation:

4 0
3 years ago
Which is the limiting reactant if we start with 30.0 g Al and 30.0 h O2​
lorasvet [3.4K]

Al

Explanation:

The limiting reactant will be Al:

        4Al + 3O₂ → 2Al₂O₃

The limiting reactant is the reactant in short supply in a chemical reaction.

     Given parameters:

  Mass of Al = 30g  Molar mass = 27g/mol

         Number of moles = \frac{mass}{molar mass} =  \frac{30}{27}

         Number of moles of Al = 1.111 mole

  Mass of O₂ = 30g, molar mass = 32g/mol

   Number of moles =  \frac{30}{32} = 0.94mol

In the reaction:

          4 moles of Al reacted with 3 moles of O₂

         1.11moles of Al will require \frac{1.11 x3}{4} = 0.83mole to react

But we have been given 0.94mole of O₂. This is more than required.

Therefore O₂ is in excess and Al is the limiting reactant.

Learn more:

Limiting reagents brainly.com/question/6078553

#learnwithBrainly

4 0
2 years ago
Which of the following traits are inherited from parents when the genetic material found in genes is passed to offspring on the
Advocard [28]
I believe it is B. I’m sorry if i’m wrong. Tell me if i’m wrong or right!
7 0
2 years ago
Jeff has night vision goggles and can see people and animals even if it is pitch black outside. What type of electromagnetic wav
forsale [732]

Infrared radiation

Explanation:

The type of electromagnetic waves Jeff uses to make his goggles work are the infrared radiations.

Jeff is certainly using a night vision goggle to see in the dark . It senses infrared radiations

  • Infrared radiations are part of the electromagnetic spectrum.
  • Every hot objects gives off infrared radiations.
  • These googles have thermal imaging sensors that detects these radiations.
  • Naked eyes cannot see the radiations.
  • The heat emitted is a form of radiation called the infrared radiation.

learn more:

Electromagetic radiation brainly.com/question/6818046

#learnwithBrainly

7 0
3 years ago
Other questions:
  • as electrons pass through a particular device magnets begin to rotate. this rotation is then used to power devices such as ceili
    12·2 answers
  • How many orbitals are there in the third shell (n=3)?
    8·2 answers
  • Calculate the silver ion concentration in a saturated solution of silver(i) sulfate (ksp = 1.4 × 10–5).
    7·1 answer
  • Which element Shows very similar chemical properties to barium?​
    7·1 answer
  • 9 How many grams of O₂ are needed to produce 15.5 g Fe₂O3 in the following reaction? Fe(s) + O₂(g) → Fe₂O3 (s)​
    11·1 answer
  • 1. Identify the seven diatomic elements and explain why they are different from the rest of the elements
    12·2 answers
  • The heat of vaporization of an unknown liquid is 1,340 Joules per gram. What is the minimum number of Joules needed to change 20
    9·1 answer
  • Oxygen is composed of three isotopes: oxygen-16, oxygen-17 and oxygen-18 and has an average atomic mass of 15.9982 amu. Oxygen-1
    12·1 answer
  • Which description of groundwater is correct?
    14·1 answer
  • ¿POR QUÉ EL AGUA Y EL ACEITE NO SE MEZCLAN?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!