The temperature change is 23 °C.
<em>q = mC</em>Δ<em>T</em>
Δ<em>T</em> = <em>q</em>/(<em>mC</em>)
<em>m</em> = 355 g
∴ Δ<em>T</em> = (34 000 J)/(355 g × 4.184 J·°C⁻¹g⁻¹) = 23 °C
<em>Note</em>: The answer can have only <em>two significant figures</em> because that is all you gave for the amount of heat absorbed.
Answer:
Chemoautotrophs
Explanation:
Autotrophs are groups of organisms that are capable of manufacturing their own food (organic molecules) through the fixation of carbon dioxide. There are two types of autotrophs:
- <em>Photoautotrophs fix carbon dioxide by using light as the energy for driving the process.</em>
- <em> </em><em>Chemoautotrophs f</em><em>ix carbon dioxide by using energy from the oxidation of inorganic molecules such as magnesium, or sulfur.</em>
Chemoautotrophs usually inhabit extreme environment such hot vents, deep sea, etc.
Answer:
The two nonmetals indicate that covalent naming rules apply.
Explanation:
Answer:
B
Explanation:
The products are what come out of the mix.
Answer:
The boiling point of water will be lower than the boiling point of the solution made from ethylene glycol and water.
Explanation:
It is all related to the colligative properties, in this case we talk about boiling point elevation.
The colligative properties are four: osmotic pressure, boiling point elevation, freezing point depression and lowering vapor pressure.
They all depends on the solute. As we add more solute, the colligative property will change according to the relationship between the pure solvent and the solution. In boiling point elevation, the boiling point of the solution will be higher, the osmotic pressure will be also higher and in freezing point depression and lowering vapor pressure, solution will has a lower freezing point and a lower vapor pressure.
Relation between the colligative properties:
ΔTf / Kf = ΔTb / Kb = ΔP / P = π / R.T
