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2 years ago

Answer the amount of miles of O2

Chemistry

1 answer:

lord [1]2 years ago

5 0

Answer:

Explanation:

the answer is 3 because it is 3 for the o2 so 3 you have to pay more attention for the small ditails

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A 13.5g sample of gold is heated, then placed in a calorimeter containing 60g of water. The temperature of water increases from

sweet-ann [11.9K]

Answer:

$T_i~=163.1$ ºC

Explanation:

We have to start with the variables of the problem:

Mass of water = 60 g

Mass of gold = 13.5 g

Initial temperature of water= 19 ºC

Final temperature of water= 20 ºC

Initial temperature of gold= Unknow

Final temperature of gold= 20 ºC

Specific heat of gold = 0.13J/gºC

Specific heat of water = 4.186 J/g°C

Now if we remember the heat equation:

$Q_H_2_O=m_H_2_O*Cp_H_2_O*deltaT$

$Q_A_u=m_A_u*Cp_A_u*deltaT$

We can relate these equations if we take into account that all heat of gold is transfer to the water, so:

$m_H_2_O*Cp_H_2_O*deltaT=~-~m_A_u*Cp_A_u*deltaT$

Now we can put the values into the equation:

$60~g*4.186~J/g{\circ}C*(20-19)~{\circ}C=-(13.5~g*0.13~J/g{\circ}C*(20-T_i)~{\circ}C)$

Now we can solve for the initial temperature of gold, so:

$T_i~=(\frac{60~g*4.186~J/g{\circ}C*(20-19)~{\circ}C}{13.5~g*0.13~J/g{\circ}C})+20$

$T_i~=163.1$ ºC

I hope it helps!

5 0

3 years ago

What ions represent an acid? What ions represent a base?

ira [324]

Answer:

Acid: H^+ Base: OH^- Have a great day.....

Explanation:

3 0

3 years ago

What scientific instrument is capable of measuring very small masses?

marusya05 [52]

Answer:

Electronic balances.

Explanation:

5 0

3 years ago

Read 2 more answers

How do you find the # of sigma and pi bonds using a Lewis dot structure

Lubov Fominskaja [6]

Every single bond is a sigma bond.

A double bond contains 1 sigma bond and 1 pi bond.

A triple bond contains 1 sigma bond and 2 pi bonds.

For example, in acetylene, H-C≡C-H, the sigma bond is formed by the head-on overlap of two sp orbitals. The pi bonds are formed by the side-on overlap of 2p orbitals.

3 0

3 years ago

True or False A gas that produces a pop with s burning splint is carbon dioxide

DanielleElmas [232]

False, that is Hydrogen.
Carbon dioxide makes lime water go cloudy. :)

6 0

3 years ago