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zepelin [54]
3 years ago
14

HELPPPPP!!!!

Chemistry
2 answers:
Margarita [4]3 years ago
8 0

Answer:

sound waves travel.faster through materials that are more dense

o-na [289]3 years ago
8 0

Answer:

Sound wave scan travel faster through materials that are more dense.

Explanation:

The speed of sound depends on the elasticity and the density of the medium it is travelling. Generally sound travels faster in liquids than in gases and faster in solids than in liquids.

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Calculate the partial pressure of the CO2 in the expired air at its peak, assuming 1 atm pressure and a body temperature of 37∘C
kvasek [131]

Answer:

P2= 45.50 atm

Explanation:

If the amount of gas in the tanks remains same we use the equation P1T1=P2T2

40 x 281.15 = P2 x 247.15

P2= 45.50 atm

4 0
3 years ago
Account for the change when NO2Cl is added using the reaction quotient Qc. Match the words in the left column to the appropriate
ryzh [129]

Answer:

A. Disturbing the equilibrium by adding NO2Cl decreases Qc to a value less than Kc.

B. To reach a new state of equilibrium, Qc therefore increases which means that the denominator of the expression for Qc decreases.

C. To accomplish this, the concentration of reagents decreases, and the concentration of products increases.

Explanation:

Hello,

In this case, for the equilibrium reaction:

NO_2Cl(g)+NO(g)\rightleftharpoons NOCl(g)+NO_2(g)

Whose equilibrium expression is:

Kc=\frac{[NO_2][NOCl]}{[NO_2Cl][NO]}

The proper matching is:

A. Disturbing the equilibrium by adding NO2Cl decreases Qc to a value less than Kc, since the denominator becomes greater, therefore, Qc decreases.

B. To reach a new state of equilibrium, Qc therefore increases which means that the denominator of the expression for Qc decreases, since the lower the denominator, the higher Qc as it has the concentration of reactants.

C. To accomplish this, the concentration of reagents decreases, and the concentration of products increases, since the reactants must be consumed in order to reestablish equilibrium by shifting the reaction towards the products.

Best regards.

8 0
4 years ago
A compound is a liquid at room temperature, dissolves in water, and the resulting solution is weakly conducting. the compound is
ZanzabumX [31]
True, for example, hydrogen peroxide (liquid):

H₂O₂ + H₂O ⇄ H₃O⁺ + HO₂⁻

HO₂⁻ + H₂O ⇄ H₃O⁺ + O₂²⁻

(the resulting solution is weakly conducting)
3 0
3 years ago
What three factors does gravitational potential energy depend upon?
irakobra [83]

Answer: The object's mass, height off the ground, and the strength of gravity :)

8 0
3 years ago
Read 2 more answers
Will give brainliest!
lukranit [14]

Answer:

A.

Explanation:

melting of ice will increase water in oceans due to which water in oceans will increase and salinity will decrease. hence, melting of ice caps near the north pole affects salinity of the ocean

5 0
3 years ago
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