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kap26 [50]
4 years ago
11

Why do modern scientists use repeated experiments to develop and test hypothesis?

Chemistry
1 answer:
choli [55]4 years ago
7 0
B) Repeated experiments that show the same results are less likely to contain experimental errorli
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Which could be the catalyst in a chemical reaction?
AlekseyPX

Answer:  C. enzyme

Explanation:

A catalyst is a substance which increases the rate of a reaction by taking the reaction through a different path which involves lower activation energy and thus more molecules can cross the energy barrier and convert to products.

The catalyst itself does not take part in the chemical reaction and is regenerated as such at the end.

Enzymes are proteins that reduce the activation energy of biological reaction. Enzymes increase the speed of a reaction and help it to run faster. Thus they are also called as bio catalysts.

Activated complex is the transition state which is very unstable and is formed during the course when reactants are converted to products.

4 0
3 years ago
_________ used to refer to the solid that dissolves in water to form ions.
algol [13]
The solute is the substance that you put into water to dissolve.
5 0
4 years ago
How many milliliters of 4.00 m hcl(aq) are required to react with 2.75 g of zn(s)?
Anna007 [38]
25 milliliters are required
7 0
3 years ago
What is the volume of 18.9 g of a liquid that has a density of 0.956 g/ml
Alex_Xolod [135]
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To get volume you divide the mass by the density which gives you about
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6 0
3 years ago
4.
Mila [183]

Answer:

0.47m²

Explanation:

Given parameters:

Length = 9.025 x 10⁶m

Width  = 5.215 x 10⁻⁸m

Unknown:

Area of the rectangle  = ?

Solution:

Area is the derived from the product of the length and width of a body.

 Area  = length x width  = 9.025 x 10⁶m  x  5.215 x 10⁻⁸m

  Area  = 0.47m²

6 0
3 years ago
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