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
Zolol [24]
3 years ago
5

Which is one way to determine whether a reaction was a chemical reaction or a nuclear reaction?

Chemistry
2 answers:
Elena-2011 [213]3 years ago
7 0

Answer:

A. Check for a change in total mass during the reaction.

Roman55 [17]3 years ago
5 0
Answer: check for a change in total mass during a reaction.

According to the law of conservation of mass during a chemical change the total mass of the products remains equal to the total mass of the reactants: there is not change in the total mass.

During nuclear reactions the mass can change due to the huge release of energy which proceeds from mass change, as per the famous equation ΔE =Δm. c^2.
You might be interested in
Type a sentence or two about early models of telephones. Include its description.
Evgesh-ka [11]

Answer:early models of telephones were used with a twirl of numbers

Explanation:

Not advanced technology

8 0
3 years ago
Read 2 more answers
1. Solid fossil fuel formed from _____________ remains. Produces energy when _____________.
wolverine [178]
Organisms and burned
7 0
3 years ago
How much heat is needed to boil 45 grams of water at 100°C?​
wolverine [178]

Answer:

Depends how much water and the temperature of the water. To heat 1 mL of water by 1 degree C 1 cal of energy (4.184 Joules) is required. Assuming that the water is at 25 degrees C, to boil one litre (liter) of water you would require 75,000 cal or 313.8 kJ.

6 0
3 years ago
Suppose that 25.0 mL of 0.10 M CH3COOH (aq) is titrated with 0.10 M NaOH (aq). What is the pH after the addition of 10.0 mL of 0
olya-2409 [2.1K]

Answer:

pH=-1.37

Explanation:

We are given that 25 mL of 0.10 M CH_3COOH is titrated with 0.10 M NaOH(aq).

We have to find the pH of solution

Volume of CH_3COOH=25mL=0.025 L

Volume of NaoH=0.01 L

Volume of solution =25 +10=35 mL=\frac{35}{1000}=0.035 L

Because 1 L=1000 mL

Molarity of NaOH=Concentration OH-=0.10M

Concentration of H+= Molarity of CH_3COOH=0.10 M

Number of moles of H+=Molarity multiply by volume of given acid

Number of moles of H+=0.10\times 0.025=0.0025 moles

Number of moles of OH^-=0.10\times 0.01=0.001mole

Number of moles of H+ remaining after adding 10 mL base = 0.0025-0.001=0.0015 moles

Concentration of H+=\frac{0.0015}{0.035}=4.28\times 10^{-2} m/L

pH=-log [H+]=-log [4.28\times 10^{-2}]=-log4.28+2 log 10=-0.631+2

pH=-1.37

6 0
3 years ago
Draw the structure of tofacitinib with explicitly shown all carbon and hydogen atoms. identify the number of carbon atoms in tof
Andrew [12]

The structure of tofacitinib with explicit carbon and hydrogen is the first attached picture.

The number of carbon atoms in tofacitinib are 16.

The molecular formula of tofacitinib is C_{16}H_{20}N_{6}O.

The structure of tofacitinib with all the filled hydrogen atoms is the second attached picture.

3 0
3 years ago
Other questions:
  • How many moles of nitrogen are in 2.0×10−2mole of quinine?
    13·1 answer
  • What type of change produced the rust shown above? A. chemical, because a new substance with new properties was formed B. physic
    15·1 answer
  • Which of these properties of matter depends on the amount of a sample present?
    10·2 answers
  • Consider two electrochemical reactions: A and B. Reaction A results in the transfer of 2 mol of electrons per mole of reactant a
    14·1 answer
  • Which atomic model proposed that electrons move in specific orbits around the nucleus of an atom
    7·1 answer
  • Determine the number of significant figures for each. a) 65.74 b) 60.009 c) 66_ d) 65.750
    5·1 answer
  • 17. Is the scientific method suitable for solving problems only in<br> the sciences? Explain.
    11·1 answer
  • If the amount of radioactive sodium-24, used for studies of electrolytes within the body, in a sample decreases from 0.8 to 0.2
    12·1 answer
  • Shane walks 10 miles at 4 mph damian walks 12 miles at 5 mph. which of them will take the longest?
    11·1 answer
  • FILL IN THE BLANK! ILL GIVE BRAINLIEST The heat trapping nature of__and other gases was demonstrated in the mid 19th century
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!