One sign of a chemical reaction is that gas is being created.
Answer:
The correct answer would be "They could allow scientists to explore remote places, like other planets, in new ways".
As the artificial muscles are lightweight and can withstand high temperatures they can be used efficiently in exploring remote places, stars, or planets where humans can not survive.
For example, they can be used to explore the inner or outer core region of the earth which would help us more in understanding the earth.
Similarly, robots with these types of muscles can be used to obtain samples from other planets which have a very high temperature such as mercury.
Answer:
A. NaHCO₃
Explanation:
NaHCO₃ ⇒ NaOH + H₂CO₃
NaOH is a strong base and H₂CO₃ is a weak acid. Therefore, NaHCO₃ is a salt of a strong base-weak acid reaction. The salt is basic because carbonic acid (H₂CO₃) is a weak acid so it remains undissociated. So, there is a presence of additional OH⁻ ions that makes the solution basic.
Hope that helps.
Answer:
V₂ = 568.9 mL
Explanation:
Given data:
Initial volume of gas = 550 mL
Initial pressure of a gas = 960 mmHg
Initial temperature = 200.0°C
Final volume = ?
Final pressure = 830 mmHg
Final temperature = 150°C
Solution:
Initial temperature = 200.0°C ( 200+273 = 473 K)
Final temperature = 150°C (150+273 = 423 K)
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
P₁V₁/T₁ = P₂V₂/T₂
V₂ = P₁V₁ T₂/ T₁ P₂
V₂ = 960 mmHg × 550 mL × 423 K / 473 K ×830 mmHg
V₂ = 223344000 mL / 392590
V₂ = 568.9 mL