1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natali [406]
3 years ago
8

Arcturus is a star whose surface temperature is 4290 K. What is most likely the color of Arcturus? What is most likely the mass

of Arcturus? about solar masses
Chemistry
2 answers:
Snowcat [4.5K]3 years ago
8 0

Answer:

orange

0.8

Explanation:

On egde

sasho [114]3 years ago
7 0

Answer: orange and 0.8

Explanation: edge2021

You might be interested in
What mass of water is needed to raise the temperature by 15 degrees C using 165 Joules of energy
Lady bird [3.3K]

Mass of the water is 2.63 g.

<u>Explanation:</u>

Mass of the water, m = ? g

Temperature, ΔT = 15 °C

Heat absorbed, q = 165 J

Specific heat capacity, c = 4.18 J / g °C

q = m × c × ΔT

Now, we have to find the mass of the water by rewriting the above equation as,

m =  $\frac{q}{c\times dT }

Now Plugin the above values in the equation as,

m = $\frac{165}{4.18\times15}

 =  2.63 g

So the mass of the water is found as 2.63 g.

8 0
3 years ago
Read 2 more answers
instrucions classify the following reactions as synthesis, decomposition,single replacement, double replacement, or combustion.
My name is Ann [436]

Answer:

There are no specific equations but here what i can give you:

1. Synthesis -- A synthesis reaction is a chemical change in which two or more substances react to form a single new substance.

In all synthesis reactions, there is a single product that is a compound!

2. Decomposition -- A decomposition reaction is a chemical change in which a single compound breaks down into two or more simpler products. (This is the opposite of synthesis reactions!)

Most decomposition reactions require energy in the form of heat, light, and electricity.

3. Single Replacement -- A single-replacement reaction is a chemical change in which one element replaces a second element in a compound. You can identify a single-replacement reaction by noting that both the reactants and the products consist of an element and a compound.

4. Double Replacement -- A double-replacement reaction is a chemical change involving an exchange of positive ions between two compounds.

For a double replacement reactions to occur, one of the following is usually true:

- One of the products is only slightly soluble and precipitates from solutions.

- One of the products is a gas.

- One product is a molecular compound such as water.

5. Combustion -- A combustion reactions is a chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat or light.

A combustion reactant always involves oxygen as a reactant. (If the supply of oxygen is limited, then the combustion will not be complete.)

The other reactant is a hydrocarbon, which is a compound composed of hydrogen and carbon and the complete combustion of a hydrocarbon produces CO2 and H2O.

Hydrocarbons include methane, propane, and butane.

I really hope this helps you!

3 0
3 years ago
In each cycle of a Carnot engine, 104 J of heat is absorbed from the high-temperature reservoir and 51 J is exhausted to the low
oee [108]

Answer:

the efficiency of the Carnot engine is e=0 .5060 (50.96%)

Explanation:

The carnot cycle effifiency e is calculated through

e = W/Q₂

where

W= work

Q₂= heat absorbed

Q₁= heat exhausted

from an energy balance

W= Q₂ - Q₁ ( the proportion of the heat absorbed that was not released was converted to work)

therefore

e=(Q₂-Q₁)/Q₂ = 1 - Q₁/Q₂ = 1 - 51 J/104 J = 0.5060 (50.96%)

3 0
3 years ago
Homologous chromosomes pair up during prophase I to form a ________________.
Ksivusya [100]
I’m pretty sure the correct answer is “tetrad”
6 0
3 years ago
How are amplitude modulation and frequency modulation techniques similar?
Ivanshal [37]

Answer:

d

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • You have 357 ml of chlorine trifluoride gas at 699 mmHg and 45 celsius what is the mass of the sample
    5·1 answer
  • What is the maximum number of electrons found in any energy level of the known elements? (Refer to the periodic table.)
    6·1 answer
  • How is energy involved in a chemical change?
    13·1 answer
  • The molecular mass of air, at standard pressure and temperature, is approximately 28.97 g/mol. Calculate the mass of 3.33 moles
    14·2 answers
  • Diphosphorus pentoxide(P2O5) reacts with water to form phosphoric acid, a major industrial acid. In the laboratory, the oxide is
    11·1 answer
  • A mixture of pepper and water is a suspension because ________ HELPPPP
    8·1 answer
  • In metals electricity
    15·1 answer
  • The large holes that can form in Limestone eventually lead to the formation of caves and caverns.
    6·1 answer
  • Newtons’ THIRD Law of Motion
    8·1 answer
  • Alpha decay produces what type of particle?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!