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Ira Lisetskai [31]
3 years ago
11

What is this number in standard notation, 8.2x10^2

Chemistry
1 answer:
Ne4ueva [31]3 years ago
3 0
Either 8.2 x 10^5 or 820,000
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The mass of an object is 205 gram while the volume was measured to be 82.5 mL. What is this object's density?
aniked [119]

2.48 g/mL

Density = mass/volume = (205 g)/(82.5 mL) = 2.48 g/mL

5 0
3 years ago
Cytoplasm contains all the
True [87]

Cytoplasm contains all the material and organelles within a cell.

7 0
3 years ago
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What is the mass percent of a solution of 7.6 grams sucrose in 83.4 grams of water
dlinn [17]

Answer:

The mass percent of a solution of 7.6 grams sucrose in 83.4 grams of water is 8.351 %.

Explanation:

Given,

Mass of Sucrose = 7.6 grams

Mass of Water = 83.4 grams

In this solution, Sucrose is solute and water is the solvent.

Mass percent of a solution can be calculated using the formula,

Mass percent =  (Mass of Solute/Mass of Solution)(100)

As sucrose is solute, mass of solute = 7.6 grams

As the solution contains both Sucrose and Water,

Mass of solution = 7.6 grams + 83.4 grams = 91 grams

Substituting the values, Mass percent = (7.6/91)(100) = 8.351 %.

7 0
3 years ago
I WIll upvote for answer<br> Balance the following reaction Fe^2 O ^3 +HCI+FeCI^3+H^2O
kumpel [21]
Let's balance step by step. We'll start with Iron (Fe)
Fe2O3 + HCl --> FeCl3 + H2O
We have 2 Fe on the left, and only one on the right, so we'll double the Fe on the right
Fe2O3 + HCl --> 2FeCl3 + H2O
Now we have six Cl on the right, and only one on the left, so we'll multiply the Cl by six on the left
Fe2O3 + 6HCl --> 2FeCl3 + H2O
Finally, we can balance the water, as we have 6 H and 3 O on the left, and 2 H and one O on the right, so we can triple the H2O on the right
Fe2O3 + 6HCl --> 2FeCl3 + 3H2O
The equation has been balanced.
4 0
3 years ago
Please help do not understand!!!!!!!!!!!!!!!
makvit [3.9K]

Answer:

If your asking how much the reactions weigh separately than it should be 25

Explanation:

25 +25=50

7 0
3 years ago
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