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2 years ago

What makes a compound a base?

Chemistry

1 answer:

PSYCHO15rus [73]2 years ago

3 0

Answer:

C.) It dissolves into Hydroxide ions in water (OH-)

Explanation:

A.) is incorrect because acids dissolve into hydrogen ions, not bases.

B.) is incorrect because acids have a pH lower than 7. Bases have a pH higher than 7.

C.) is correct because this is the defining characteristic of bases.

D.) is incorrect because bases can dissolve oils. This means they can be mixed.

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Show how to calculate the mass of a proton, neutron, and electron in kilograms using the data and the equality statement 1 amu =

barxatty [35]

Answer:

Proton: m= 1.6726x10⁻²⁷ kg

Neutron: m= 1.6749x10⁻²⁷ kg

Electron: m= 9.1164x10⁻³¹ kg

Explanation:

We can calculate the mass of a proton, neutron, and electron using the following data:

mass of proton: 1.00728 amu

mass of neutron: 1.00867 amu

mass of electron: 5.49x10⁻⁴ amu

1 amu = 1.66054x10⁻²⁷ kg

Now, the mass of a proton, neutron, and electron in kilograms can be calculated using the next relation:

$m = 1.66054 \cdot 10^{-27} \frac{kg}{amu} \cdot particle's mass (amu)$

For the proton:

$m = 1.66054 \cdot 10^{-27} \frac{kg}{amu} \cdot 1.00728 amu = 1.6726 \cdot 10^{-27} kg$

For the neutron:

$m = 1.66054 \cdot 10^{-27} \frac{kg}{amu} \cdot 1.00867 amu = 1.6749 \cdot 10^{-27} kg$

For the electron:

$m = 1.66054 \cdot 10^{-27} \frac{kg}{amu} \cdot 5.49x10⁻⁴ amu = 9.1164 \cdot 10^{-31} kg$

I hope it helps you!

4 0

3 years ago

A cube with edge = 1.00” of an unknown pure substance has a mas off 10.0 oz. what is the density of this substance in g/mL? In k

shepuryov [24]

Answer 1) The density of the cube is found to be 17.30 g/mL

Given the edge that is 1 inch, so to convert it into cc which will be;

1" = 16.38 cc and cc = mL

Convert mass given in oz into g;

10 oz = 283.495 g;

The formula is Mass = Density / Volume

Substituting;

Density = (283.495 / 16.38) = 17.30 g/mL

Hence, the density will be 17.30 g/mL

Answer 2) The density of cube should be 1.738 Kg/L

The same process of conversion can be followed,

To convert Mass in Kg will be 0.02834 Kg and Volume in L it will be 0.0163 L

On solving with the equation of Mass = Density / Volume;

Density = (0.02834 / 0.0163) = 1.738 Kg/L

Here, the density will be 1.738 Kg/L

8 0

4 years ago

How do you preform water displacement

malfutka [58]

1. Fill a beaker or graduated cylinder with enough water to completely immerse the sphere in. 2. Record the baseline initial measurement. 3. Drop the sphere in. 4 Record final measurement.

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3 years ago

The mass ratio of H:S:O in sulfuric acid today is 1:8:32. Predict the mass ratio of sulfuric acid in 23th century.

lions [1.4K]

You can find the answer on chegg.com. Hope that help :)

8 0

3 years ago

What can you use a convex lens to do when you hold it close to an object?

andrew-mc [135]

Clearly, moving the object closer to the lens makes the image become both larger and further away. As you move the object closer and closer to the focal point, the image will become further and further away. ... As expected the image moves further away and becomes much bigger than the object.

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3 years ago

Read 2 more answers