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
aev [14]
4 years ago
13

Which situation is an indication that a chemical change has occurred? A. Heat is released. B. No color change occurs. C. No heat

is released. D. The temperature does not change.
Chemistry
2 answers:
love history [14]4 years ago
8 0

A) Heat is released :) have a nice day

Westkost [7]4 years ago
4 0
A. Heat is Released.

(Both physical and chemical changes can tamper with temperature, but to identify a CHEMICAL change - you'll notice a color change, heat being released, odor and/or bubbling.)

The only thing listed applicable is Heat is Released.
You might be interested in
Your solution has a volume of 36 ml and a mass of 970 g. what is the density of your solution
LenaWriter [7]

Answer:

The answer is

<h2>26.94 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question

mass = 970 g

volume = 36 mL

The density of the object is

density =  \frac{970}{36}  \\ 26.944444...

We have the final answer as

<h3>26.94 g/mL</h3>

Hope this helps you

6 0
3 years ago
What is the half-life of a product?
Nataly [62]
The expectancy of how long a product will last divided by two!
5 0
3 years ago
Consider the following reaction: CO(g)+2H2(g)⇌CH3OH(g) This reaction is carried out at a different temperature with initial conc
Anni [7]

Answer:

Ka = 4.76108

Explanation:

  • CO(g) + 2H2(g) ↔ CH3OH(g)

∴ Keq = [CH3OH(g)] / [H2(g)]²[CO(g)]

                      [ ]initial         change         [ ]eq

CO(g)              0.27 M       0.27 - x        0.27 - x

H2(g)              0.49 M       0.49 - x        0.49 - x

CH3OH(g)          0                0 + x               x = 0.11 M

replacing in Ka:

⇒ Ka = ( x ) / (0.49 - x)²(0.27 - x)

⇒ Ka = (0.11) / (0.49 - 0.11)² (0.27 - 0.11)

⇒ Ka = (0.11) / (0.38)²(0.16)

⇒ Ka = 4.76108

7 0
3 years ago
Which element is in the same family as Chlorine (Cl) and Fluorine (F)?
ValentinkaMS [17]

Answer/Explanation:

Chlorine and Fluorine are in the Halogen family. The elements in the Halogen family are:

Fluorine (F)

Chlorine (Cl)

Bromine (Br)

Iodine (I)

Astatine (At)

Tennessine (Ts)

Hydrogen (H) is a nonmetal

Oxygen (O) is a nonmetal

Lithium (Li) is an alkaline metal.

8 0
3 years ago
Read 2 more answers
Balance this equation, please.
Digiron [165]

Answer:3Li+YbCl3=Yb +3LiCl

Explanation:as there are three cl in the first one so to balance them we will put 3before LiCl in order to make Cl balanced now there are 3 Li also so put before Li 3 making it also balanced Yb is balanced already

7 0
3 years ago
Other questions:
  • What is the energy of a photon that has a frequency of 0.5 Hz?
    8·1 answer
  • Who proposed a heliocentric model of the solar system
    10·2 answers
  • If 1.240 g of carbon dioxide dissolves in 1.01 l of water at 755 mm hg, what quantity of carbon dioxide (in grams) will dissolve
    11·2 answers
  • Solid Iron (III) reacts with oxygen gas to form iron (III) oxide, which is the compound we see when rust is present. Based on th
    8·1 answer
  • Which of these represent an unbalanced equation with the correbt chemical formuals
    15·1 answer
  • What is the freezing point of a 0.82 m aqueous solution of a non-volatile non-electrolyte?
    8·1 answer
  • The ___ is the number of protons in the nucleus of an atom of an element.<br> Fill in the blank.
    5·1 answer
  • Conservation of resources includes the following actions EXCEPT
    8·1 answer
  • What is the percent lithium in lithium nitrate?
    6·1 answer
  • Petrification is the combination of 2 types of fossilization, replacement and permineralization, by which element? group of answ
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!