Answer:color change, formation of a precipitate, formation of a gas, odor change, temperature change.
Explanation:
The answer is A cause the water breaks down the rocks into small pieces which are called sediments. These things later on turn into rocks with pressure and heat
4.60 g of of H₂O form when all the butane burns.
<h3>What is butane ?</h3>
One of the smallest liquid streams frequently created in a refinery is butane. Ten hydrogen atoms and four carbon atoms make up the butane molecule. Typically, butane is either marketed as a finished product or is blended into LPG or gasoline in tiny quantities.
It is frequently employed as a fuel for portable stoves and cigarette lighters, as a propellant in aerosols, as a heating fuel, as a refrigerant, and in the production of a broad variety of goods. Liquefied petroleum gas and butane both exist (LPG).
Butane has a low level of toxicity. In butane misuse, high exposure concentrations can be anticipated. Central nervous system (CNS) and cardiac consequences are the most frequently seen effects in cases of misuse.
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2.54 × 10⁵ kJ of heat are required to fully melt a 0.834 m³ block of ice, with a density of 917 kg / m³.
<h3>What is melting?</h3>
Melting is a physical change in which solids turn into liquids.
- Step 1. Calculate the mass of ice.
We have a block of 0.834 m³ of ice with a density of 917 kg/m³.
0.834 m³ × 917 kg/m³ = 765 kg = 7.65 × 10⁵ g
- Step 2. Convert 7.65 × 10⁵ g to moles.
We will use the molar mass of water.
7.65 × 10⁵ g × (1 mol/18,02 g) = 4.24 × 10⁴ mol
- Step 3. Calculate the heat required to melt 4.24 × 10⁴ moles of water.
According to the thermochemical equation, 6.01 kJ are required to melt 1 mol of water.
4.24 × 10⁴ mol × (6.01 kJ/mol) = 2.54 × 10⁵ kJ
2.54 × 10⁵ kJ of heat are required to fully melt a 0.834 m³ block of ice, with a density of 917 kg / m³.
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Answer:
the percent error expected from each of theses person's body:
in homes:
% E = 0.14267 %
in doctor's office:
% E = 0.257 %
Explanation:
- ° C = ( ° F - 32 ) * (5/9)
- % E = ( | true - exp | / true ) * 100
- body temp = 38.9 ° C = 102.02 ° F
thermometer used in homes:
⇒ T = 102.02 ° F +/- 0.1 ° F = 102.12 ° F ∧ 101,92 ° F
⇒ T = 102.12 ° F = 38.9555 ° C
⇒ % E = ( | 38.9 - 38.9555 | ) / 38.9 ) * 100 = 0.14267 %
in the doctor's oficce:
⇒ T = 38.9 ° C +/- 0.1 ° C = 39 ° C ∧ 38.8 ° C
⇒ % E = (( | 39 - 38.9 | ) / 38.9 ) * 100 = 0.257 %
