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
sleet_krkn [62]
3 years ago
8

If a decrease in temperature accompanies a reaction, what occurred?

Chemistry
1 answer:
Alina [70]3 years ago
6 0
<h2>Answer:</h2>

If a decrease in temperature accompanies a reaction, Energy was absorbed.

So the forth option is correct option.

<h3>Explanation:</h3>
  • If decrease in temperature occurs during a reaction, it indicates that the reaction is endothermic reaction.
  • <u>Endothermic process describes the process or reaction in which the system absorbs energy from its surroundings, usually in the form of heat.</u>
  • <em>So energy in form of heat is absorbed.</em>

You might be interested in
What is the equations that decompose hydrogen peroxide
Rufina [12.5K]
2H2O2 decomposes into the products 2H2O + O2(g)
5 0
3 years ago
How many Moles of NAOH are present in 2.50L of 0.300 M NaOH?
maw [93]
<h3>Answer:</h3>

0.75 moles NaOH

<h3>Explanation:</h3>

We are given;

Volume of NaOH solution = 2.5 Liters

Molarity of NaOH = 0.300 M

We are required to calculate the moles of NaOH

We need to establish the relationship between moles, molarity and volume of a solution.

That would be;

Concentration/molarity = Moles ÷ Volume

Therefore;

Moles = Concentration × Volume

Thus;

Moles of NaOH = 0.300 moles × 2.50 L

                         = 0.75 moles

Therefore, the number of moles of NaOH is 0.75 moles

8 0
3 years ago
How many moles are in 9.8 grams of calcium?
kondor19780726 [428]
<span>when the number of moles Ca = mass of Ca / molar mass of Ca.

and we can get the molar mass of Ca, it is = 40 g/mol

and we have already the mass of Ca (given) = 9.8 g

so, by substitution: the moles Ca = 9.8 g / 40 g/mol

                                                       = 0.245 moles</span>
4 0
3 years ago
Read 2 more answers
What part of the cell is a cop
Tanya [424]

Answer: This is from a wiki i found. Approximately one third of a cell’s proteins are destined to function outside the cell’s boundaries or while embedded within cellular membranes. Ensuring these proteins reach their diverse final destinations with temporal and spatial accuracy is essential for cellular physiology. In eukaryotes, a set of interconnected organelles form the secretory pathway, which encompasses the terrain that these proteins must navigate on their journey from their site of synthesis on the ribosome to their final destinations. Traffic of proteins within the secretory pathway is directed by cargo-bearing vesicles that transport proteins from one compartment to another. Key steps in vesicle-mediated trafficking include recruitment of specific cargo proteins, which must collect locally where a vesicle forms, and release of an appropriate cargo-containing vessel from the donor organelle (Figure 1). The newly formed vesicle can passively diffuse across the cytoplasm, or can catch a ride on the cytoskeleton to travel directionally. Once the vesicle arrives at its precise destination, the membrane of the carrier merges with the destination membrane to deliver its cargo. Have a nice day.

Explanation: Plz make brainliest

6 0
2 years ago
Which model of the atom first introduced the idea of a nucleus?
ankoles [38]
The answer is c.) Rutherford model
5 0
3 years ago
Read 2 more answers
Other questions:
  • If 100. ml of water is added to 25 ml of 5.0 m nacl, the final concentration is __________.
    6·2 answers
  • Which volume of 2.0M NaOH(aq) is need to completely neutralize 24 milliliters of 1.0M HCl(aq)?(1) 6.0mL (2) 12mL (3) 24mL (4) 48
    15·1 answer
  • Recrystallization Step: The procedure asks for using equal amount by mass of the crude product and the recrystallization solvent
    5·1 answer
  • which contains the most amount of energy a glass of water at 20C or a glass of water at 80C. EXPLAIN ANSWER
    11·1 answer
  • For the following reaction, 16.2 grams of carbon dioxide are allowed to react with 45.0 grams of potassium hydroxide. carbon dio
    11·1 answer
  • Why NH4 is not a molecular ion
    10·1 answer
  • A 49.7 mL sample of gas in the cylinder is warm from 20°C to 92°C. What is the volume of the final temperature
    11·1 answer
  • The Statue of Liberty changing from Copper to Green is an example of...
    10·1 answer
  • Which pair will for an ionic compound
    6·1 answer
  • soaps do not work well in hard waters. But they can still be effected it large quantities of soap are added to water. Explain wh
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!