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
Talja [164]
2 years ago
6

17. A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is a _______ r

eaction.
Chemistry
2 answers:
m_a_m_a [10]2 years ago
8 0

Answer: combination

Explanation:

Licemer1 [7]2 years ago
4 0

A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is a COMBINATION reaction. A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is a COMBINATION reaction.

You might be interested in
Which of the following would be considered a natural resource that is renewable?
lilavasa [31]

Answer:

-aluminum

Explanation:

Last one is the correct answer

3 0
2 years ago
Sodium chloride, NaCl, is formed when a sodium atom transfers its electron to a chlorine atom. The difference in charge between
lorasvet [3.4K]

The reaction is extremely exothermic, producing a bright yellow light and a great deal of heat energy.

6 0
3 years ago
Read 2 more answers
A 200. 0-ng sample of sodium-24 was stored in a lead-lined cabinet for 45 hours. The half-life of sodium-24 is 15 hours. How muc
ipn [44]

Answer:

25 gm would be left

Explanation:

45 hours is 3 half lives

200 gm  * 1/2 * 1/2 * 1/2 = 25 gm

3 0
1 year ago
Lithium β is a solid phase of lithium still unknown to science. The only difference between it and ordinary lithium is that Lith
pychu [463]

Answer:

The density of Lithium β is 0.5798 g/cm³

Explanation:

For a face centered cubic (FCC) structure, there are total number of 4 atoms in the unit cell.

we need to calculate the mass of these atoms because density is mass per unit volume.

Atomic mass of Lithium is 6.94 g/mol

Then we calculate the mass of four atoms;

= 4 .atoms*\frac{1.mole}{6.022 X10^{23} .atoms} *\frac{6.94g}{mole} = 4.6097 X10^{-23} g

⇒next, we estimate the volume of the unit cell in cubic centimeter

given the edge length or lattice constant a = 0.43nm

a = 0.43nm = 0.43 X 10⁻⁹ m = 0.43 X 10⁻⁹ X 10² cm = 4.3 X 10⁻⁸cm

Volume of the unit cell = a³ = (4.3 X 10⁻⁸cm)³ = 7.9507 X 10⁻²³ cm³

⇒Finally, we calculate the density of Lithium β

Density = mass/volume

Density = (4.6097 X 10⁻²³ g)/(7.9507 X 10⁻²³ cm³)

Density = 0.5798 g/cm³

3 0
3 years ago
3. How was the rainbow created by the light emitting from the flashlight?
Ede4ka [16]

Answer:

by nuclear reaction

Explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • Which of the following terms refers to the number of moles of solute per liter of solution?
    10·1 answer
  • What forms when chemical reactions combine pollution with sunlight?
    14·1 answer
  • Absorbance readings are taken for five standard ferrous (ii) thiocyanate solutions and a beer’s law plot is created with the equ
    5·1 answer
  • Has anyone done a slime lab report?
    14·1 answer
  • Which accurately describes the stages of photosynthesis? A. Stage 1: The granum captures light energy. Stage 2: The thylakoid co
    8·1 answer
  • What role do plants have in the movement of water through the water cycle
    14·1 answer
  • How does the emission spectrum support the idea of quantized energy level
    12·1 answer
  • Why Doesn't The Earth Usually Feel Solar Winds?
    6·1 answer
  • The radioactivity of U-235 is of low intensity. Why then were the people of Hiroshima exposed to high intensity radiation in the
    10·1 answer
  • How many moles are present in a sample of HCI with a mass of with a mass of 3.65g?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!