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Ivahew [28]
3 years ago
14

Which is a characteristic of calcium?

Chemistry
1 answer:
posledela3 years ago
4 0
The answer is D
Calcium has two electrons in its outer energy shell
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A neutral atom of Cl-37 has
Ostrovityanka [42]

Answer:

17 protons, 20 neutrons, and 17 electrons​.

Explanation:

A periodic table can be defined as the standard arrangement of chemical elements by atomic number, electronic configuration and chemical properties in a tabular form.

Generally, a proper representation of the mass number and atomic number of chemical elements is key and very important in chemistry.

Furthermore, as a rule, it should be noted that the mass number (nucleon number) is always larger than the atomic number(number of proton).

The mass number of this neutral atom of Cl-37 is 37 and we know that the atomic number (number of protons) of chlorine is 17. Also, the atomic number of an element is equal to the number of its electrons.

A neutral atom of Cl-37 has 17 protons, 20 neutrons, and 17 electrons.

Hence, a neutral atom of Cl-37 can be identified based on its number of protons because it represent its atomic number, which is what is used to differentiate an atom of an element from the atom of another chemical element.

6 0
3 years ago
At what temperature do KCl and NaCl have the same solubility?
Serhud [2]

Answer:

they have the same molar solubility at 44.5 degrees celsius

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8 0
2 years ago
How many kL does a 9.51 ´ 109 cL sample contain?
elena-14-01-66 [18.8K]

Answer:

9.51 × 10⁴ kL

Explanation:

Step 1: Given data

Volume of the sample (V): 9.51 × 10⁹ cL

Step 2: Convert "V" to liters

We will use the conversion factor 1 L = 100 cL.

9.51 × 10⁹ cL × (1 L / 100 cL) = 9.51 × 10⁷ L

Step 3: Convert "V" to kL

We will use the conversion factor 1 kL = 1000 L.

9.51 × 10⁷ L × (1 kL / 1000 L) = 9.51 × 10⁴ kL

9.51 × 10⁹ cL is equal to 9.51 × 10⁴ kL.

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the accepted value for density of sugar is 2.165/g/cm^3. A student measured a sugar cube as 5cm by 5cm by 5 cm and the mass is 2
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how e center of my friends and I don't want to see u mahal ha at sinasabayan mo pa man ang ga lihim ng tao ay mas mabuti ay kasama sa bahay nila mars ha ta ipahiling ang pag iral I love the fact I have no how much po tanga

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