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zloy xaker [14]
3 years ago
14

How can cool red giant be more luminous than a warmer main sequence star?

Chemistry
2 answers:
Nat2105 [25]3 years ago
8 0
C) the red giant will be more luminous if it is bigger than the main sequence star
ruslelena [56]3 years ago
5 0

Answer: C

Explanation:

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g Sucrose (C12H22O11), a nonionic solute, dissolves in water (normal freezing/melting point 0.0°C) to form a solution. If some u
DIA [1.3K]

Answer:

15.4 g of sucrose

Explanation:

Formula to be applied for solving these question: colligative property of freezing point depression. → ΔT = Kf . m

ΔT = Freezing T° of pure solvent - Freezing T° of solution

Let's replace data given: 0°C - (-0.56°C) = 1.86 C/m . m

0.56°C / 1.86 m/°C = m → 0.301 mol/kg

m → molality (moles of solute in 1kg of solvent)

Our mass of solvent is not 1kg, it is 150 g. Let's convert it from g to kg, to determine the moles of solute: 150 g. 1kg/1000g = 0.150 kg

0.301 mol/kg .  0.150kg = 0.045 moles.

We determine the mass of sucrose, by the molar mass:

0.045 mol . 342 g/1mol = 15.4 g

4 0
3 years ago
What type of energy is stored in the earths crust and produces earthquakes
Svetradugi [14.3K]
A rapid release of stored up energy 
8 0
3 years ago
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Which types of particles are charged and located within the nucleus of an atom?
Readme [11.4K]

Answer:

Protons, electron, and neutrons

Explanation:

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3 years ago
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Escribe aquí algo que consideres que requiere un balance para que se lleve a cabo correctamente:
Galina-37 [17]

Answer:

Direct weighing means that an object is placed directly on a balance and the mass read. Weighing directly requires that the balance be carefully zeroed (reads zero with nothing on the balance pan) in order to obtain accurate results.

Explanation:

Hope I Help?

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3 0
3 years ago
Convert 8.876 × 10^12 m^2 to units of km^2.
Darya [45]

Answer:

8.876\times 10^{18}\ km^2

Explanation:

In this problem, we need to convert 8.876 \times 10^{12}\ m^2 to km².

We know that,

1 km = 1000 m

⇒ 1 km² = 10⁶ m²

So,

8.876 \times 10^{12}\ m^2=8.876 \times 10^{12}\times 10^6\ km^2\\\\=8.876\times 10^{18}\ km^2

So, 8.876 \times 10^{12}\ m^2 is equal to 8.876\times 10^{18}\ km^2.

7 0
3 years ago
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