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Serggg [28]
4 years ago
12

Calculate the density of a substance that has a mass of 250g and a volume of 50. Ml

Chemistry
1 answer:
solong [7]4 years ago
8 0
Density = Mass / Volume

Density =  250g / 50.0ml

Density = 5.0g/ml
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From the data table given, calculate the missing quantity
ololo11 [35]

<u>Answer:</u> The initial volume of the gas is 16.55 mL

<u>Explanation:</u>

To calculate the final temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{V_1}{T_1}=\frac{V_2}{T_2}

where,

V_1\text{ and }T_1 are the initial volume and temperature of the gas.

V_2\text{ and }T_2 are the final volume and temperature of the gas.

We are given:

V_1=?mL\\T_1=300K\\V_2=16mL\\T_2=290K

Putting values in above equation, we get:

\frac{V_1}{300K}=\frac{16mL}{290K}\\\\V_1=\frac{16\times 300}{290}=16.55mL

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As the force increases, the ________ increases, too.
madreJ [45]

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8 0
3 years ago
Define ionic bond and explain the formation of nacl and mgo
fomenos

a.

Ionic bond is a bond in which there is complete transfer of valence electrons between atoms.

The atom that loses the valence electron is called the electron donor while the atom that accepts the electron is called the electron acceptor.

Ionic bond usually occurs between metals and non metals.

Ionic bond is a bond in which there is complete transfer of valence electrons between atoms.

b.

The force of attraction between Na⁺ and Cl⁻ forms the ionic bond.

  • In the formation of NaCl, Na has one valence electron in its outermost shell and Cl needs one electron to complete the stable octet configuration.
  • Na donates its valence electron to Cl to form the ionic bond. So, the Na atom becomes positively charged with a charge of +1 while the Cl atom becomes negatively charged with a charge of -1.

Since the atoms are now charged, the force of attraction between them forms the ionic bond.

c.

The force of attraction between Mg²⁺ and O²⁻ forms the ionic bond.

  • In the formation of MgO, Mg has two valence electrons in its outermost shell and O needs two electrons to complete the stable octet configuration.
  • Mg donates its two valence electron to O to form the ionic bond. So, the Mg atom becomes positively charged with a charge of +2 while the O atom becomes negatively charged with a charge of -2.

Since the atoms are now charged, the force of attraction between them forms the ionic bond.

Learn more about ionic bond here:

brainly.com/question/13526463

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Convert to grams to moles, convert g of water to litres, divide moles by litres = M

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