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Over [174]
3 years ago
9

Which of the following is the FIRST step in solving the SI conversion problems?

Chemistry
2 answers:
AVprozaik [17]3 years ago
7 0

Answer:

A

Explanation:

Nina [5.8K]3 years ago
6 0

Answer:

It is A!

Explanation:

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After stirring the sugar you added to some hot tea, the sugar disappears but the tea tastes sweet.
kirza4 [7]
Chemical Change because if it would be a physical change the physic of the tea would look different but it doesn’t
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3 years ago
A chemical reaction was used to produce 2.95 moles of copper(II) bicarbonate, Cu(HCO3)2.
BARSIC [14]

Answer:

About 547 grams.

Explanation:

We want to determine the mass of copper (II) bicarbonate produced when a reaction produces 2.95 moles of copper (II) bicarbonate.

To do so, we can use the initial value and convert it to grams using the molar mass.

Find the molar mass of copper (II) bicarbonate by summing the molar mass of each individual atom:

\displaystyle \begin{aligned} \text{MM}_\text{Cu(HCO$_3$)$_2$} &= (63.55 + 2(1.01)+2(12.01)+6(16.00))\text{ g/mol} \\ \\  &=185.59\text{ g/mol} \end{aligned}

Dimensional Analysis:

\displaystyle 2.95\text{ mol Cu(HCO$_3$)$_2$}\cdot \frac{185.59 \text{ g Cu(HCO$_3$)$_2$}}{1 \text{ mol Cu(HCO$_3$)$_2$}} \Rightarrow 547 \text{ g Cu(HCO$_3$)$_2$ }

In conclusion, about 547 grams of copper (II) bicarbonate is produced.

8 0
3 years ago
If there is no net force on an object, then the object will
user100 [1]
If there is no net force on an object, then the object will <span>maintain it's rate of speed. Basically, net force is the change in an object's motion. If it is stationary and not moving, the object will stay stationary. If the object is moving at a rate of 2 miles per hour, it will constantly continue to move 2 mph because there is no net force.</span>
6 0
3 years ago
Molecule A is a __________. Bonding of fatty acids and polar phosphate groups to glycerol. Molecule A is a __________. Bonding o
Elena L [17]

Answer:

The correct option is: c. phospholipid      

Explanation:

Phospholipids, also known as glycerophospholipids, are the derivatives of fatty acids which is a major structural component of the cell membranes.

Phospholipid is the class of lipids that is composed of a <u>glycerol molecule that forms ester bonds with the two long-chain fatty acids and one phosphate group.</u>

<u>Therefore, Molecule A is a </u><u>phospholipid.</u>

7 0
2 years ago
What is freshly pumped oil called?
algol13

Answer:

When the drill hits oil, some of the oil rises from the ground high into the air. This immediate release of oil is known as a "gusher." Once a reservoir has been located, pumps are used to extract the oil.

7 0
2 years ago
Read 2 more answers
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