Answer:
Your just in luck my friend we just finished learning about that.
Explanation:
Melting
Answer:
C. chromium is a metal that is less reactive than sodium.
Explanation:
Hello.
In this case, since chromium is in period 4 group VIB we infer it is a transition metal which slightly reacts with acids and poorly reacts with oxygen and other oxidizing substances. Thus, in comparison with both sodium and potassium which are highly reactive even with water as they get on fire, we can say that it is less reactive than both potassium and sodium, therefore, answer is: C. chromium is a metal that is less reactive than sodium.
Best regards.
The correct answer is C. Electrical energy
It was because of Thomson's Plumb Pudding Model that prompted Rutherford to do the alpha particle experiment. A question popped into his mind about the arrangement of the electrons the positive charge. He has suspicions on the validity of the Plumb Pudding Model and he thinks it may not explain the structure of matter.
The given equation is follow,
<span> 2 Cl</span>₂<span> + 2 KI ⟶ __ KCl</span>₂<span> + I</span>₂
There are two Iodine atoms at left hand side of the equation and two at right hand side of the equation so Iodine is balanced.
There are four chlorine atoms at left hand side and two at right hand side. In order to balance chlorine atoms we will multiply KCl₂ on right hand side by 2. So,
2 Cl₂ + 2 KI ⟶ <u>2</u> KCl₂ + I₂
Now, the potassium atoms are same on both sides, i.e. two.
Result:
The missing coefficient in given equation is 2.