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beks73 [17]
3 years ago
15

What is a good way to study

Chemistry
1 answer:
SOVA2 [1]3 years ago
7 0

Answer:

focus in class and take your time on work and get good grades

<h2>Explanation:you can do better when you understand what you are doing/learning</h2>

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Sulfur is a nonmetalic mineral that has a density of 2 g/cm3. The volume of a sample of sulfur was measured to be 5.0 cm3. what
taurus [48]

Answer:

<h2>10 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 2 × 5

We have the final answer as

<h3>10 g</h3>

Hope this helps you

8 0
3 years ago
In which biome do plants grow close to each other and close to the ground in order to resist the cold?
Yakvenalex [24]

Answer:tundra

Explanation:

Took a test

3 0
3 years ago
Read 2 more answers
Calculate the number of atoms in 4g of bromine molecule.(Br).
KIM [24]

Answer:

\\ N=n * N_{A}

We do not have n - the amount of substance.

n=\frac{m}{M}\\

The molecular weight (M) of Bromine is 80.

n=\frac{4}{80} = 0.05 \text{ mol}

N = 0.05 * 6.02 * 10^{23} = 0.301 * 10^{23}

3 0
3 years ago
If 14.5 g of MnO4- (permanganate) react with manganese (II) hydroxide how many grams of manganese (IV) oxide will be produced? T
Veronika [31]

Answer:

m_{MnO_2}=21.2gMnO_2

Explanation:

Hello,

In this case, given the balanced reaction:

2MnO_4^-+2Mn(OH)_2\rightarrow 4MnO_2+2OH^-+H_2O

We can see a 2:4 mole ration between permanganate ion (118.9 g/mol) and manganese (IV) oxide (86.9 g/mol), that is why the resulting mas of this last one turns out:

m_{MnO_2}=14.5gMnO_4^-*\frac{1molMnO_4^-}{118.9gMnO_4^-}*\frac{4MnO_2}{2molMnO_4^-}  *\frac{86.9gMnO_2}{1molMnO_2} \\\\m_{MnO_2}=21.2gMnO_2

Best regards.

5 0
4 years ago
Determine the approximate mass of the isotope of carbon in the image.
avanturin [10]
The answer is gonna be D I believe
7 0
3 years ago
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