true or false in a reaction at equilibrium the increase in one reactant causes increases in all the products

3. A vapor is which state of matter? (1 point) solid liquid gas all of the above

lidiya [134]

Answer:

Gas.

Explanation:

8 0

4 years ago

What season starts in the northern hemisphere as the suns direct rays strike the equator moving from the southern hemisphere to

laila [671]

Answer:

summer

Explanation:

3 0

4 years ago

How many Joules are released to cool 250.0 grams of liquid water from 100°C to 0°C? The specific heat of water is 4.180 J/g.C.

nlexa [21]

$\bold{\huge{\orange{\underline{ Solution}}}}$

$\bold{\underline{ Given :- }}$

We have 250g of liquid water and it needs to be cool at temperature from 100° C to 0° C
Specific heat of water is 4.180J/g°C

$\bold{\underline{ To \: Find :- }}$

We have to find the total number of joules released.

$\bold{\underline{ Let's \:Begin:- }}$

We know that,

Amount of heat energy = mass * specific heat * change in temperature

That is, 

$\sf{\red{ Q = mcΔT }}$

Subsitute the required values in the above formula :-

$\sf{ Q = 250 × 4.180 ×(0 - 100 )}$

$\sf{ Q = 250 × 4.180 × - 100 }$

$\sf{ Q = 250 × - 418}$

$\sf{\pink{ Q = - 104,500 J }}$

Hence, 104,500 J of heat is released to cool 250 grams of liquid water from 100° C to 0° C.

$\bold{\underline{ Now :- }}$

We have to tell whether the above process is endothermic or exothermic :-

Here, In the above process ΔT is negative and as a result of it Q is also negative that means above process is Exothermic

Exothermic process :- It is the process in which heat is evolved .
Endothermic process :- It is the process in which heat is absorbed .

4 0

2 years ago

What is the mass of air in room

tigry1 [53]

Answer:

the mass of the air in the room is 4.96512 kg ( in 0°C)

3 0

3 years ago

A piece of metal has a volume of 30.0cm3 and a mass of 252g. What is its density? what metal do you think this is?

Alborosie

Answer:

Explanation:

get density = D = m / V = 0.252 / 0.00003 = 8400
metal will be Cu => bronze

3 0

3 years ago