plz answer all with explanations.​

Answer:

1) Test tube 3, the third one.

2)

Explanation:

The first(1) test tube is Cold H2O(Water/dihydrogen monoxide), and 0.5 miligrams of Sodium Carbonate(Na2CO3).

The second(2) test tube is Cold H2O(Water/dihydrogen monoxide), and 0.5 miligrams of Sodium Carbonate(Na2CO3) with Citric acid(C6H8O7).

The third(3) test tube is Hot H2O(Water/dihydrogen monoxide), and 0.5 miligrams of Sodium Carbonate(Na2CO3).

The fourth(4) test tube is Hot H2O(Water/dihydrogen monoxide), and 0.5 miligrams of Sodium Carbonate(Na2CO3) with Citric acid(C6H8O7).

To find which test tube produces gas bubbles, evaluate the type of reaction from the given reactants by determining it's product. Reactants →(yeilds) Products.

Increasing temperature causes the concentration of a reactant to increase, while causing the concentration of a product to increase. This scenario is the exact opposite for decreasing temperature. Endothermic(heat transfer in;endo) is an increase in temperature, while Exothermic(heat transfer out;exo) is a decrease in temperature. Colder substances move slower, and will react slower while warmer substances move faster, and react faster. Just as you warm up when you run faster. This is all based on thermodynamics(heat energy and kinetic(motion) energy resulting in movement in particles). Temperature is the measure of average kinetic energy in an object. Surface tension decreases as temperature rises, and increases as temperature falls. Therefore more boubles with an endothermic reaction because heat is transferred within the substance. And thus a greater reaction.

Why did the Stamp Act Congress meet in 1765?
to form a new government for the colonies
to approve the taxes imposed by Parliament
to discuss how to respond to the new taxes
to agree not to import British goods

What was the significance of the Emancipation Proclamation to the war and to the North and South?

the xia dynasty was founded along what chinese river?

4 What steps have been taken to stop diserùmination against the Untouchables and improve their way of
te? What have been the effects of these steps?

Compare these two sources. What do they have in common? They share a similar central idea. They present the same evidence. They were created by the same organization. They are attempting to influence the public.

Reasons for the growth of the labor movement inlcudes all of the following except:
a.
low wages and long hours
c.
child and women began to work outside of the home
b.
poor and hazardous working conditions
d.
numerous staged labor strikes by immigrants


Please select the best answer from the choices provided

A
B
C
D

____ dating is the process of putting events or fossils in order from oldest to youngest without using actual dates.

After the war, the United States was seen as..
A. a greater military power
B. a lesser military power
C. the most powerful country in the world ​

pls help ill give you braibless

What is the 8 month of the year? I really need to know. And fast

why was New York impossible to defend during revolutionary war

How does the discussion of Europeans’ first meeting with the Calusa Indians contribute to the development of ideas in the text?

What are the Demographic characteristics of the New England, Chesapeake, Middle, and Southern colonies? Explain each separately :)

By the 1850s in Great Britain, most rural towns and villages began to grow into industrial towns and cities.
True
False

What's a good essay topic for writing about the Soviet Union?

• If the president checks the legislative branch by vetoing a bill, what can the legislative branch do?​

I need some help!

Which was the cause of the conflict between Spain and England during the 1500s?


the failure of English pirates to attack and take Spanish treasure ships


the victory of the Spanish Armada over the English fleet


religious differences between the Catholic ruler of Spain and the Protestant ruler of England


the success of Spanish conquistadors in taking control of English colonies

Please hurry I’ll mark brainleist
Which of these policies, still in place today, can be attributed to the work of Progressive reformers?
Families can homeschool their children.
O Children must attend school until a certain age.
O Families can choose the schools their children attend.
Children must have access to a free college education.

Explain if robert wilcox whether or not he accomplished his goal.

HELPPPP WITH HISTORY PLEASE I NEED THIS GUYS

HURRY PLS what was the first successful english establishment (town) in north america??

HELP ME PLEASEEE
Which group believed that only a powerful government could safeguard liberty? (5 points)
1.Federalists
2.Anti-federalists

Who successfully led an African tribe’s fight against British colonizers?

how did the neolithic revolution change human society

Which state in German Confederation took the leadership for the unification of Germany?

Based on the purpose of the letter, Selim's description of the followers of Shah Ismail I as a "heretical faction" can best be interpreted as a commentary of the Safavid Empire's

Trump will have an overwhelming victory. I bet $20 that Trump is winning this midnight.

Join our server as we will be streaming election! VMt568Y
There will be a lot of political debates in chat soon!

(Answering this question will also earn you 25 points)

Which of the following ideas in the Declaration of Independence did John Locke inspire?
A separation of powers
B freedom of speech
C right to life, liberty, and the pursuit of happiness
D right to a speedy trial and a jury of one's peers

Which voyage did Christopher Columbus’ venture on in the year 1493?

What was life like for Mongol women compared to European women?