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lilavasa [31]
3 years ago
6

An agronomist hypothesized that add ran intots

Chemistry
2 answers:
Alchen [17]3 years ago
8 0

Answer:

D

Explanation:

OlgaM077 [116]3 years ago
6 0

Answer:

D and A

Explanation:

Got em right on edge :P

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What are the 2 layers of continental crust called?​
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Into which two smaller groups are plants divided.
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7. An element's most stable ion forms an ionic compound with chlorine having the formula XCl2. If the ion of element X has a mas
Serhud [2]

Answer:

The element is strontium and the number of neutrons it have is 51.

Explanation:

Based on the given information, the ionic compound is,  

XCl₂ ⇔ X₂⁺ + 2Cl⁻

X2+ is the ion of the mentioned element

As mentioned in the given question, the number of electrons of the element X is 36 and as seen from the reaction the charge present on the ion is +2. Now the atomic number will be,  

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36 = atomic number - 2

Atomic number = 38

Based on the periodic table, the atomic number 38 is for strontium element, and the sign of strontium is Sr. Hence, the element X is Sr.  

Now based on the given information, the mass number of the element is 89. Now the no. of neutrons will be,  

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= 89 - 38

= 51 neutrons.  

4 0
3 years ago
Vitamin K is involved in normal blood clotting. When 2.09 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point o
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