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nasty-shy [4]
3 years ago
8

What is the name of the groups that contain Iron(Fe) and Gold(Au)?

Chemistry
2 answers:
Molodets [167]3 years ago
7 0

Answer:

Transition Metals

Explanation:

Mice21 [21]3 years ago
6 0

Answer:

Group 8 & 11

Explanation:

Transition Metals

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If I initially have a gas at a pressure of 10.0 atm, a volume of 24.0 liters, and a temperature
Bezzdna [24]

Answer:

The new volume of gas is 25.7 L.

Explanation:

Given data:

Initial volume = 24.0 L

Initial pressure = 10.0 atm

Initial temperature = 200 K

Final temperature = 300 K

Final volume = ?

Final pressure = 14.0 atm

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 10.0 atm × 24.0 L × 300K / 200 K × 14.0 atm

V₂ = 72000 atm .L. K / 2800 K.atm

V₂ = 25.7 L

The new volume of gas is 25.7 L.

5 0
4 years ago
What is the empirical formula of a compound that is 40% sulfur and 60% oxygen by weight?
Zigmanuir [339]
The formula would be so3
3 0
3 years ago
Calculate the kilojoules needed to heat 231 g of gold from 18 ∘C to 195 ∘C.
LuckyWell [14K]

5.27 kJ of heat are required to heat 231 g of gold from 18 °C to 195 °C.

We have 231 g of gold at 18 °C and supply it with heat to increase its temperature to 195 °C. We can calculate the amount of heat required using the following expression.

Q = c \times m \times \Delta T

where,

  • Q: heat
  • <em>c: specific heat capacity of gold</em> (0.129 J/g.°C)
  • m: mass
  • ΔT: change in the temperature

Q = \frac{0.129 J}{g.\° C}  \times 231 g \times (195 \° C - 18 \° C) = 5.27 \times 10^{3} J = 5.27 kJ

5.27 kJ of heat are required to heat 231 g of gold from 18 °C to 195 °C.

You can learn more about heating here: brainly.com/question/1105305

8 0
2 years ago
Gasone provides the energy that powers many car engines. In an engine, gasoline and oxygen are mixed together and burned, creati
Leya [2.2K]

Answer:

In the forward direction and releases carbondioxide gas from backside.

Explanation:

In the forward direction and the carbondioxide gas which is a waste material is removed from the engine at the back. The chemical energy of fuel is converted into mechanical energy with the help of engine which able the car to move in the forward direction so engine is the key component that is responsible for the movement of car.

3 0
3 years ago
Read 2 more answers
Energy conversions _____. can lose energy as sound can be 100 percent efficient if controlled properly are calculated by multipl
nikdorinn [45]

Answer:

are calculated by multiplying useful energy by the total amount of energy

Explanation:

The energy conversions are never 100 percent efficient. This is because the energy originally is converted into a mixture of the useful and not useful energy. For example, gasoline in the car is converted to motion, sound and friction. The later two (sound and friction) are energies but are less useful. Thus, in this case, the energy conversion is not 100 % efficient. Thus, the energy efficiency equation comes into play. This is given as the ratio of the useful energy to the total energy. It is a fraction.  

6 0
3 years ago
Read 2 more answers
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