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aev [14]
2 years ago
7

4. Corhplete the table below.

Chemistry
1 answer:
ella [17]2 years ago
6 0

Answer:

Valency of the elements

  1. 1
  2. 2
  3. -2
  4. -1
  5. -1
  6. mark me as brainliest ❤️
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If 0.0203 g of a gas dissolves in
ololo11 [35]

Answer:

P2 = P1*n2 / n1

       =1.02 atm *0.008 moles / 0.00113 moles

      = 7.22 atm

∴the new pressure will be 7.22 atm

Explanation:

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As a chemical reaction occurs, the thermometer in the container records an increase in temperature. What is true of the reaction
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The second one is correct
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in terms of amounts of energy and harmful radioactive waste produced , which of the following is the most accurate comparison of
Eddi Din [679]

Explanation:

Nuclear fusion produces more energy with less radioactive waste compared to nuclear fission process.

  • In nuclear fission, a radioactive decay occurs in which a heavy nucleus spontaneously disintegrates into two lighter nuclei and several neutrons with the release of energy.
  • Nuclear fusion occurs when small atomic nuclei combines into larger ones with the release of a large amount of energy.
  • Instability of a nuclide is enough to start up a nuclear fission reaction. In some instances, a heavy nuclide is bombarded with another nuclide.
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Nuclear wastes emanating from nuclear fusion process is least compared to that of nuclear fission.

Nuclear fusion produces more energy  compared to nuclear fission process.

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3 0
3 years ago
Water has a higher boiling point than expected because
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Because of the strong attractions between polar water molecules.
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3 years ago
A large highway barrier is 1 meter wide, by 1 meter tall, by 2 meters long.
Romashka [77]

Answer:

when mass is  1×10⁴ Kg then density is 5 g/cm³.

when mass is 104 Kg then density is 5.2 × 10⁻² g/ cm³.

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

Given data:

mass = 1×10⁴ Kg

volume= w ×l× h = 1×2× 1 = 2 m³

density = ?

first of all we will convert the given volume meter cube to cm³:

we know that  

2×1000000 = 2 × 10⁶ cm³

Now we will convert the mass into gram.

1 Kg = 1000 g

1×10⁴ × 1000 = 1 ×10⁷ g

Now we will put the values in the formula,

d = m/v

d = 1 ×10⁷ g / 2×10⁶ cm³

d = 0.5 × 10¹ g/cm³

   or

d = 5 g/cm³

If mas is 104 Kg:

104 × 1000 = 104000 g

d= m/v

d = 104000 g / 2×10⁶ cm³

d= 52000 ×10⁻⁶ g/ cm³

d= 5.2 × 10⁻² g/ cm³

7 0
3 years ago
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