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vovikov84 [41]
3 years ago
14

All living things are made of​

Chemistry
2 answers:
suter [353]3 years ago
8 0
Cells!!!!!!!!!!!!!!!
Elena L [17]3 years ago
5 0

Answer:

atoms !!!!!!!!!!11111111111

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NEED THIS NOW!! !
ivolga24 [154]

Atoms cannot be created or detroyed, only rearranged.

8 0
3 years ago
Read 2 more answers
A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake. Eventually it rusts and the gas bubbles to the
igomit [66]

Answer:

0.228 L is the volume that the gas occupies after it is driedand stored at STP.

Explanation:

Pressure of the wet gas = P=695 Torr=\frac{695}{760}atm=0.914 atm

1 atm = 760 Torr

Pressure of water vapor = p = 0.0372 atm

Pressure of gas = P_1=P-p=0.914 atm-0.0372 atm = 0.8768 atm

Volume of wet gas = V_1=287 mL=0.287 L

1 mL = 0.001 L

Temperature of the wet gas = T_1=28.0^oC=28.0+273 K=301 K

Pressure of dry gas at STP = P_2=1 atm

Temperature of the dry gas at STP ,T_2= 273 K

Volume of dry gas at STP = V_2

Using combined gas law:

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

\frac{0.8768 atm\times 0.287 L}{301 K}=\frac{1 atm\times V_2}{273 K}

V_2=0.228 L =228 mL

0.228 L is the volume that the gas occupies after it is driedand stored at STP.

4 0
3 years ago
How many moles of ions are made when 1 lol of CaCl2 dissolves?
romanna [79]
CaCl₂ → Ca²⁺ + 2Cl⁻

∑=1+2=3

D) 3 mol
5 0
4 years ago
What is the difference between melting and melting point
Yakvenalex [24]

Answer:

Melting Is when a substance is actually melting and melting point is a point at which a substance is able to melt.

4 0
4 years ago
Does a laboratory balance measure mass or weight
kolezko [41]
A balance in a lab measures the weight of a substance or object.
Weight is the mass of the body x the gravitation pull on the mass of the object.

So the mass of the object can be found by dividing the weight by gravitational constant.

The gravitational constant on earth is 1. so if a balance says that a substance weighs 300g then its mass is also 300g on earth because 300/1 = 300.

Hope that helps :)
5 0
4 years ago
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