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
Blizzard [7]
3 years ago
5

The Marsh test, developed in the mid-1830s and used until the 1970s, detected arsenic in a poisoned substance by mixing the subs

tance with _____ and _____, then heating it to determine whether a metallic deposit would form.
History
1 answer:
lord [1]3 years ago
4 0

Answer:

The poisoned substance was mixed with arsenic-free zinc and sulfuric acid, resulting in arsine gas.

The gas was later ignited and decomposed into pure metallic arsenic. This test was highly sensitive and could detect even one-fiftieth of a milligram of arsenic. It was a remarkable discovery, since before that, arsenic was widely used as poison in enormous amounts of murders, impossible to detect and trace.

You might be interested in
Which key ideas and details from the graphic organizer best illustrate Madison’s perspective?
sergey [27]

Based on the fact that Madison was a federalist, the graphic organizer most likely shows his perspective as C.) The national and state governments share some powers.

<h3>What did Madison believe?</h3>

James Madison was of the opinion that the best way to safeguard the unity of the United States was to make for a national government that was quite powerful.

Even at that however, he realized that states still need to have certain powers to enable them to adequately govern their people and their affairs.

As a result, he called for the federal government to share some powers with the state governments in order to ensure the smooth running of the nation. Some of those powers included the power to tax and borrow money.

In conclusion, option C is correct.

Find out more on concurrent powers at brainly.com/question/847131

#SPJ1

7 0
1 year ago
Which statement is true?
bazaltina [42]

Answer:

I think maybe C

Explanation:

4 0
3 years ago
What’s the name of the British army that attempted to stop German invasion
mariarad [96]

Answer:it was named the (RAF) Royal.Air.Force

its online

7 0
3 years ago
How did hawakuli react to estevan arrival
FrozenT [24]

In light of the third or fourth-hand reports from Estevan of terrific places ahead, Marcos told the emissary the supposed brilliant urban communities of the north might exist. Empowered by the minister's stories, the traveler Coronado traveled north a year later, unquestionably encouraging to come back with crowds of gold.

Like Estevan and Marcos, he found no gold; however, he returned with an abundance of helpful information about the topography and individuals of the Southwest.

5 0
3 years ago
Labor unions were formed in the late 1800s to fight for better working conditions in America. One of the conditions they fought
Ad libitum [116K]

A. 12 hours a day, six days a week.

Because of it was a new era in manufacturing, industrial, companies soon swept over the market. One individual does not have much say in an entire corporation. But the entire workforce may have more leverage in the corporation that the corporate it's self. Thus when unjust wages and hours were enforced, the people needing what little money they could get. Labor Unions were formed.  

4 0
3 years ago
Other questions:
  • Identify 3-5 key beliefs that should have been added to the Magna Carta.. why
    14·1 answer
  • Congress shall have power...to make all laws which shall be necessary and proper for carrying into execution the foregoing power
    14·2 answers
  • Soon after the protests of andrew jackson and his supporters, the caucus____?
    13·1 answer
  • Identify and briefly explain ONE method the Aztecs used to keep subjects peoples under their control.
    15·1 answer
  • The ritual in which sins are washed away with water is called __________. Communion
    13·1 answer
  • How often where the Olympic Games playes
    11·2 answers
  • When building the atomic bomb, did employees know what they were making?
    11·1 answer
  • How does the media play the watchdog role?
    11·1 answer
  • What resource was NOT found in Texas
    14·2 answers
  • Why shouldn’t the government chose what we watch talk about facts about countries regulating TV ! Explaining
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!