Answer:
a. HI(aq)+NaOH(aq) → H2O(l)+NaI(aq)
b. HBr(aq) +KOH(aq) → H2O(l)+KBr(aq)
c. HNO3(aq)+Ba(OH)2(aq) → BaNO3(aq)+H2O(aq)
D. HClO4(aq)+Sr(OH)2(aq) → SrClO4(aq)+H2O(aq)
Explanation:
In a neutralization reaction, an acid and a base react to form water and salt and involves the combination of H+ ions and OH- ions to generate water.
In this case, the atoms have charge positive and negative, the only thing we have to do is to change in the products taking account that positive with negative an vice-versa.
H+I-(aq)+Na+OH-(aq) → H+2O-(l)+Na+I-(aq)
Answer:
12
Explanation:
To get to this answer you have to look at the number first. So the given number is 12.47 and you need 2 sig figs.
To help you understand this more start off by underlining the first 2 numbers because 2 sig figs are needed. <u>12</u>.47
Now you want to look at the number after the underlined (I bolded that number). <u>12</u>.47
If the number is above 5 then you would round the previous number up by one but in this case it is 4 so you do not increase the number. Hence, you getting 12 as your final answer.
Hope this helped! Let me know if you have any questions.
Answer:
We can obtain sugar crystals from the sugar solution,without losing ethanol by warming a bowl of water. Putting sugar in it till it dissolves. And then leave it to cool with a string at its mouth. When the water cools sugar crystals accumulate in the string thus without losing ethanol.
Answer:
The correct answer is B
Explanation:
This question seeks to test the difference between mass and weight.
Mass is a measurement of the amount of matter present in an object. While <u><em>weight is a measurement of the force of gravity pulling (the mass of) an object</em></u>. Hence, measuring the weight of the moon rocks in the moon might be a waste since the weight of the object on earth will produce a different value due to the difference in the force of gravity between the earth and the moon.
<u>Answer:</u> The correct answer is Option E.
<u>Explanation:</u>
According to the Bronsted-Lowry conjugate acid-base theory:
An acid is defined as a substance which looses donates protons and thus forming conjugate base.
A base is defined as a substance which accepts protons and thus forming conjugate acid.
To form a conjugate acid of , this compound will accept one proton to form
The conjugate acid formed is named as carbonic acid.
Hence, the correct answer is Option E.