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
polet [3.4K]
4 years ago
11

Which of the answer choices correctly identifies a scenario that displays evidence a chemical reaction is occurring?

Chemistry
2 answers:
d1i1m1o1n [39]4 years ago
8 0

Answer: Option (b) is the correct answer.

Explanation:

A chemical reaction is the one in which there occurs change in the chemical composition of a substance in order to result in the formation of a new compound.

For example, when sugar burns then it means it is chemically reacting due to which it turns into black.

On the other hand, a physical change is the one in which there occurs no change in chemical composition of a substance. As a result, no new compound is formed.

For example, Paper absorbs liquid and sinks, Water boils and evaporates, and  Glass vibrates and shatters are all physical changes.

Thus, we can conclude that sugar burns and turns black correctly identifies a scenario that displays evidence a chemical reaction is occurring.

tigry1 [53]4 years ago
5 0
Sugar burns and turns black. A completely new substance was formed, which is the main pointer for it being a chemical reaction. More evidence would be change of color, odor, and the fact that flammability is a chemical property so setting something on fire would be a chemical change.
You might be interested in
A chemical engineer for a fertilizer company is determining the most efficient way to produce ammonia. the engineer carries out
Natalija [7]
Haber's process is used for the industrial production of ammonia. The process conditions at which maximum yield can be obtained, include 15-20mPa pressure, 400-500 degrees Celsius of the temperature, use of methane as a source of hydrogen, use of iron-based catalysts and combined with K2O, CaO, SiO2, and Al2O3<span>. Reuse of unreacted gases can lead to the achievement of 97% yield. </span>
7 0
4 years ago
Which of the following tends to form anions when bonding with other elements?
yarga [219]

Answer: it’s D

Explanation:

3 0
3 years ago
Read 2 more answers
What does quantities data mean?
aliina [53]
Data that can be measured, deals with numbers and length,height,area,volume etc.
8 0
4 years ago
Three metal spheres are placed next to each other as shown in the picture. A has two times the mass of B. C has one-third the ma
Tom [10]

You didn’t list the statements.

3 0
4 years ago
Read 2 more answers
A metal bulb is filled with 10.2 g of CHCl3 and 0.322 g of CH4 (two gases). What is the total pressure in the bulb if the temper
vovikov84 [41]

Answer:

3. 107 atm

Explanation:

First, we will calculate the moles of each gas by dividing its mass by its molar mass.

nCHCl₃ = 10.2 g/(119.38 g/mol) = 0.0854 mol

nCH₄ = 0.322 g/(16.04 g/mol) = 0.0201 mol

The total number of moles is 0.0854 mol + 0.0201 mol = 0.1055 mol.

The absolute temperature is 345°C + 273.15 = 618 K

We can find the pressure of the gaseous mixture using the ideal gas equation.

P × V = n × R × T

P = n × R × T / V

P = 0.1055 mol × 0.08206 atm.L/mol.K × 618 K / 0.0500 L

P = 107 atm

4 0
3 years ago
Other questions:
  • Use the following to calculate H°lattice of MgF2. Mg(s) Mg(g) H° = 148 kJ F2(g) 2 F(g) H° = 159 kJ Mg(g) Mg+(g) + e- H° = 738 kJ
    8·1 answer
  • Observation and experimentation have led many scientists to accept a theory about the origin of the universe, called The Big Ban
    10·2 answers
  • What element becomes a gas at room temperature
    5·1 answer
  • Identify one process involved in recycling carbon dioxide within ecosystems.
    15·1 answer
  • Create a calculating speed word problem using characters from Monsters University
    12·2 answers
  • 3. You have 28.5 grams of Carbon. How many atoms is this?
    11·1 answer
  • PLLZZZZ HELPPPP IT IS A TIME ASSIGNMENT !!!
    10·1 answer
  • Write a net ionic equation for the following:
    15·1 answer
  • NEED ASAP!!!!
    11·1 answer
  • Perform the following conversions:
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!