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svet-max [94.6K]
2 years ago
9

Scientific knowledge can withstand the test of time because A. exceptions can be made regarding scientific laws. B. it is open t

o change as new evidence or data is discovered. C. scientific theories have been proven beyond doubt. D. advancements in technology have no impact on science.
Chemistry
2 answers:
Iteru [2.4K]2 years ago
5 0

B. It is open to change as new evidence or data is discovered. If scientists discover new evidence, they must modify their theories to conform with the new data.

A. is <em>incorrect</em>. Scientific laws are so well established that there can be no exceptions.

C. is <em>incorrect</em>. A scientific theory is the collective judgement of scientists as to the best explanation for a phenomenon. A new observation may require modification of the theory.

D. is <em>incorrect</em>. Advancements in technology can provide new evidence that requires new explanations.

DochEvi [55]2 years ago
5 0

THE ANSWER IS

it is open to change as new evidence or data is discovered.

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I don’t understand how to solve this and I don’t get ionic equation
Elden [556K]

Explanation:

Spectator ions refers to elements/molecules that do not form part of the reaction. Basically, these elements/molecules are in the same state in the reactant and product side. From the given reaction, Ca and SO4 change their state from aqueous to solid and Na and Cl do not change their state. Therefore, Na and Cl are spectator ions and Ca and SO4 are not spectator ions.

Answer:

The correct option is C.

8 0
1 year ago
Find the volumetric (mL/s) and mass (g/s) flow rates in an artery whose diameter is 0.3 mm and blood flow rate is 25 mm/s.
Setler [38]
I don’t know kid I don’t know ‍♂️
5 0
2 years ago
What mass of silver chloride can be produced from 1.73 l of a 0.147 m solution of silver nitrate?
dsp73
36.49 gm using law of equivalent proportion
4 0
2 years ago
How do you balance the chemical equation NaOH + H2SO4 &gt; Na2SO4 +H2O
jenyasd209 [6]
Make sure there are the same number of atoms of each element on either side.
1) Check each one.
2) If one's out of balance, alter the equation to balance it and go back to 1)
3) When everything's balanced, you're finished!

We have 1 Na on the left and 2 Na on the right here. We'll need another NaOH to balance it:
2 NaOH + H₂SO₄ > Na₂SO₄ + H₂O
Now O is out of balance. There's 6 on the left and 5 on the right. We'll need more H₂O:
2 NaOH + H₂SO₄ > Na₂SO₄ + 2 H₂O
Fortunately H is in balance. S is also in balance here, so looks like we did it!

Need any more help?
5 0
3 years ago
How many lone pairs are around the central atom in the Lewis formula for the
barxatty [35]

Answer:

The answer to your question is None, sulfur share of its electrons

Explanation:

Just remember:

Sulfur, S, has 6 electrons in its outermost shell

Hydrogen, H, has 1 electron in its outermost shell

Oxygen, O, has 6 electrons in its outermost shell

See the picture below

The electrons of sulfur are in blue

The electrons of oxygen are in red

The electron in hydrogen is in yellow

Sulfur is the central atom and it shares all its electrons with the oxygen.

                     

8 0
3 years ago
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