Answer:
4.427 × 10⁵
Explanation:
In mathematics, rounding up a number is a way to get a more simpler figure but not too distant from the original number. Rounding up a whole number like this (442722) to significant figures means having only four non-zero digits in the figure i.e. 442722 ~ 442700.
This means that 442722 has been rounded up to 4s.f. Hence, to use scientific notations to represent our answer, we count the number of decimal places from right to left i.e.
442700 = 5 decimal places if the point is between 4 and 4 i.e. 4.427
Therefore, the figure 442700 can be written as 4.427 × 10⁵ using scientific notation.
Answer:
d
They do not depend on the amount of substance you have.
Answer:
if it is espresso(1 shot), the coffee content to be considered is: (77/44)*(10/3)= 5.833= 0.005833 grams
Explanation:
Answer:
I think the last one
Explanation:
The reason for that is because when you go up to present something you always want to try to hav believability and confidence.
The spectator ions in the reaction between aqueous and aqueous HCl would be and ions.
<h3>What are spectator ions?</h3>
Spectator ions are anions or cations that exist both as reactants and as products in a reaction. Their forms remain unchanged both in the reactants and in the products.
Aqueous and aqueous HCl react according to the following equation:
Before the reaction, and existed in the reactants as and HCl respectively. After the reaction, and exist as in the product.
Thus, the spectator ions in this case are and ions because their forms did not change after the reaction.
More on spectator ions can be found here: brainly.com/question/28913274
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