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cluponka [151]
3 years ago
11

1. What two types of cells contain chloroplasts?

Chemistry
1 answer:
Vikentia [17]3 years ago
5 0

Answer:

plant cells and eukroyatic algae

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Scientist who have a chemical element named after them
Artyom0805 [142]
<span>There are only four elements that were named after actual scientists.
   Curium [Cm] is named after Marie and Pierre Curie. The Curies worked extensively on radioactive elements so another scientist appropriately named this radioactive element after them.
   Einsteinium [Es] is named after the famed physicist Albert Einstein.
   Lawrencium [Lr or Lw] is named after Ernest Lawrence, who invented a machine to detect radioactivity. Lawrencium is a radioactive element.     Mendelevium [Md] is named after Dimitri Mendeleef who created the modern day periodic table.</span>
6 0
3 years ago
How could an alpha particle pass straight through the metal foil and strike the center of the phosphor screen on the other side
djverab [1.8K]
I think you refer to  Rutherford's Gold Foil Experiment alpha particles pass through because of the enormous amount of empty space inside the atom. 


>>>more details here<<<
to have its trajectory affected the alpha particle has to pass "near" the nucleus to interact with the positive charge of the nucleus.
the fact is that internally the gold atoms are basically empty space and the nucleus represents only a small portion of the entire volume. only few alpha particles pass near the nucleus 

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8 0
3 years ago
What pattern appears in the horizontal arrangement (rows) of the elements in the Periodic Table, moving from left to right?
Liula [17]
The horizontal rows in the periodic table are periods, while the vertical rows are called groups. The elements moving from left to right in "periods" have increasing atomic numbers.
5 0
3 years ago
List results of Chemical Reactions.
sweet [91]

Answer:

eating

Explanation:

because when any food or anything that touches your saliva (spit) automatically a chemical reaction!

4 0
3 years ago
What is the molarity of an HCl solution if 37.0 mL is completely titrated by 56.0 mL of an NaOH solution whose concentration is
Nata [24]

Answer:

Option A. 0.378M

Explanation:

Data obtained from the question include:

Molarity of acid (Ma) =..?

Volume of acid (Va) = 37.0 mL

Volume of base (Vb) = 56.0 mL

Molarity of base (Mb) = 0.250 M

Next, we shall write the balanced equation for the reaction. This is given below:

HCl + NaOH —> NaCl + H2O

From the balanced equation above,

The mole ratio of the acid (nA) = 1

The mole ratio of the base (nB) = 1

Finally, we can determine the molarity of the acid as shown below :

MaVa/MbVb = nA/nB

Ma x 37 / 0.25 x 56 = 1

Cross multiply

Ma x 37 = 0.25 x 56

Divide both side by 37

Ma = 0.25 x 56 /37

Ma = 0.378M

Therefore, the molarity of the acid, HCl is 0.378M

5 0
4 years ago
Read 2 more answers
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