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Vlada [557]
4 years ago
6

The efficiency is the number of times a machine multiplies the input force true or false

Chemistry
1 answer:
OlgaM077 [116]4 years ago
4 0

Answer:

may be...... false not sure

Explanation:

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natka813 [3]

Answer:

B

Explanation:

3 0
3 years ago
Please help chemistry timed test
lakkis [162]

Answer:

54

Barium atomic number is 56, this means that it has 56 protons in its nucleus and put it as a period 6 element. an uncharged barium atom would have 56 electron also. However as a group 2 element barium easily loses 2 electron to form the +2 cation. the ions has 56-2=54

7 0
3 years ago
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saul85 [17]

Answer:

I don’t know this answer sorry

Explanation:

3 0
3 years ago
What kind of igneous rock usually contains large crystals?
sladkih [1.3K]
Intrusive Igneous Rocks.
8 0
3 years ago
Elemental iodine (I 2) is a solid at room temperature. What is the major attractive force that exists among different I 2 molecu
Ulleksa [173]

Explanation:

As I_{2} is a covalent compound because it is made up by the combination of two non-metal atoms. Atomic number of an iodine atom is 53 and it contains 7 valence electrons as it belongs to group 17 of the periodic table.

Therefore, sharing of electrons will take place when two iodine atoms chemically combine with each other leading to the formation of a covalent bonding.

Hence, weak forces like london dispersion forces will be present between a molecule of I_{2}.

The weak intermolecular forces which can arise either between nucleus and electrons or between electron-electron are known as dispersion forces. These forces are also known as London dispersion forces and these are temporary in nature.

thus, we can conclude that london dispersion force is the major attractive force that exists among different I_{2} molecules in the solid.

7 0
3 years ago
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