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Blababa [14]
3 years ago
12

Find the density, in g/cm3, of a metal cube with a mass of 50.3 g and an edge length (l) of 2.65 cm. The volume (V) of a cube is

V=l3.
Chemistry
1 answer:
avanturin [10]3 years ago
4 0
Divide the mass by the volume to get density.
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The density of NO2 in a 4.50 L tank at 760.0 torr and 25.0 °C is ________ g/l.
Sonbull [250]

The answer is c-1.68

4 0
2 years ago
Lana balanced an equation so that the result was 2C2H3Br + 5O2 → 4CO2 + 2H2O + 2HBr. Which most likely represents the starting e
seropon [69]

Answer:

C2H3Br + O2 → CO2 + H2O + HBr

Explanation:

The term balancing of chemical reaction equation has a unique meaning in chemistry. What it actually means is to ensure that the number of atoms of each element on the left hand side of reaction equation becomes equal to the number of atoms of the same element on the right hand side of the reaction equation.

When we look at the equation; C2H3Br + O2 → CO2 + H2O + HBr, the number of atoms of each element on the left and right hand sides of the given equation are not the same hence the equation is unbalanced.

If we look at the equation; 2C2H3Br + 5O2 → 4CO2 + 2H2O + 2HBr, the number of atoms of each element on both sides of the reaction equation are now equal, thus the later equation is the balanced version of the former.

6 0
2 years ago
A rock has a density of 3.75g/cm3 and a mass of 26g. What is the volume of the rock?
Lemur [1.5K]

Answer:

<h3>The answer is 6.93 cm³</h3>

Explanation:

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

volume =  \frac{mass}{density}  \\

From the question we have

volume =  \frac{26}{3.75}  \\  = 6.93333333...

We have the final answer as

<h3>6.93 cm³</h3>

Hope this helps you

8 0
2 years ago
What is molecular formula of Ozone?​
zmey [24]

Answer:

the molecular formula of Ozone is O_3.

7 0
2 years ago
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How many valence electrons does br want. Not have but want.
AnnZ [28]

Answer:

SO the awnser is 76.9 trust me

Explanation:

5 0
2 years ago
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