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3 years ago

If a piece of marble has the mass of 132.796 g and the volume of 26.9 cm

Chemistry

2 answers:

Mashutka [201]3 years ago

8 0

Answer:

4.94g/cm3.

Explanation:

4.94g/cm3.

jek_recluse [69]3 years ago

6 0

Answer:4.93665 g/cm“3“

Explanation: 132.796g times 26.9 equals

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Which of the following are reactants in the equation below? Select all that apply.

Paha777 [63]

Answer:

Zinc, copper sulfate

Explanation:

The reactants are the ones on the left side

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3 years ago

the first three ionization energies of an element x are 590, 1145, and 4912 kj mol-1. what is the most likely formula of the com

joja [24]

Answer: The chemical formula is $XSO_3$

Explanation:

Ionization energy is defined as the amount of energy that is required to remove an electron from a chemical species.

The ionization energy equation for the given values follow:

$X(g)\rightarrow X^+(g)+e^-;E_I=590kJ/mol$

$X^+(g)\rightarrow X^{2+}(g)+e^-;E_I=1145kJ/mol$

$X^{2+}(g)\rightarrow X^{3+}(g)+e^-;E_I=4912kJ/mol$

From the values of ionization energy above, it can be seen that the ionization energy increases as every succeeding electron is removed.

Second ionization energy is a little higher than the first one but there is a huge amount of difference between the third and second ionization energy.

This implies that the ion formed during second ionization energy has a stable configuration and it requires a humongous amount of heat to release the third electron.

Hence, the ion formed will be $X^{2+}$

Sulfite ion is a polyatomic ion having a chemical formula of $SO_3^{2-}$

An ionic compound is formed between the two ions and the chemical compound formed between the two will have a formula of $XSO_3$

Hence, the chemical formula is $XSO_3$

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3 years ago

The force of gravity pulls down on your house with a total force of 300,000 newtons. The force of gravity pulling down on your h

Nataly [62]

Explanation:

The force of gravity acting on an object is given by :

W = F = mg

Where W is the weight of an object

The force of gravity on house is 300,000 N. The force of gravity pulling down on your house would be exactly twice as much if your house has twice as much as mass because force of gravity is directly depends on mass.

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3 years ago

What is the word for mixture of solids and water, plz an accurate answer, otherwise report.

labwork [276]

Water is H2O but I'm not sure about solids.

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3 years ago

How many ml of a 2.0 m nabr solution are needed to make 200.0 ml of 0.50 m nabr?

gogolik [260]

To solve this we use the equation,

M1V1 = M2V2

where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.

2.0 M x V1 = 0.50 M x 200 mL

V1 = 50 mL needed

4 0

3 years ago