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3 years ago

I bake some flour until it turns into leavened bread. Is this a physical or chemical change? Why do you think this?

Chemistry

1 answer:

KatRina [158]3 years ago

6 0

That’s not how it goes.

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Calculate the density of a solid substance if a cube measuring 2.54 cm on one side has a mass of 108 g/cm3

kozerog [31]

Answer:

6.59 g/cm³

Explanation:

Step 1: Given data

Side of the cube (s): 2.54 cm

Mass of the cube (m): 108 g

Step 2: Calculate the volume of the cube

We will use the following expression.

V = s³ = (2.54 cm)³ = 16.4 cm³

Step 3: Calculate the density of the solid

Density is an intrinsic property, equal to the quotient between the mass and the volume.

ρ = m/V

ρ = 108 g / 16.4 cm³ = 6.59 g/cm³

3 0

3 years ago

1 What characteristic of an element determines how its atoms can bond with other<br> atoms?

Masja [62]

Answer:

Electrons

Explanation:

The electrons of the outermost energy level determine the energetic stability of the atom and its tendency to form chemical bonds with other atoms to form molecules. Under standard conditions, atoms fill the inner shells first, often resulting in a variable number of electrons in the outermost shell.

8 0

4 years ago

What does photosynthesis mean?

AleksandrR [38]

Photosynthesis is the ability for a plant to turn light into energy, thus feeding it

6 0

3 years ago

Read 2 more answers

20g of butanedioic acid were shaken with a mixture of 100 cm3 ether and 100 cm3 water at 298K. After titration with standard sod

zlopas [31]

Answer:

I'm Not Good At Chemistry.

Explanation: It's Hard.

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3 years ago

What is the formula of the hydride formed by germanium?

Nadusha1986 [10]

The atoms combine to form compounds to attain stability in nature. The combination of atoms takes place by sharing of electrons between the atoms or complete transfer of electrons from one atom to another. Generally, atoms combine to complete their octet, that is to possess eight electrons in their outer most shell (noble gas configurations) except hydrogen which can attain stability by two electrons in its outer most shell.

Since germanium has 4 electrons in its outer most shell so it needs 4 more electrons to complete its octet and attains the stability. Hydrogen has 1 electron in its outer most shell and it needs only 1 electron to attain stability so, each germanium will combine with 4 hydrogen atoms and thus forming $GeH_4$ molecule which is stable in nature.

Hence, $GeH_4$ is the formula of the hydride formed by germanium.

6 0

3 years ago