answersLogoWhite

0

🤝

Britain in WW2

Questions regarding British participation in World War 2, in both the European and Pacific theaters of the war.

7,126 Questions

What Hydroquinone is an organic compound It has a molar mass of 110.1 grams over mol and a composition of 65.45 percent C 5.45 percent H and 29.09 percent O by mass. What is the molecular formula?

Firstly divide percentages by molar mass of that element

C

65.45/12.01=5.45

H

5.45/1.01=5.40

O

29.09/16=1.82

Then divide the result of the first step by the smallest answer

C

5.45/1.82=3

H

5.40/1.82=3

O

1.82/1.82=1

Empirical Formula is C3H3O

If the molar mass is 110.1 we can divide this by our empirical formulas molar mass to get the molecular formula.

so 110.1/(12.01x3+1.01x3+16)=110.1/55.06=2

so the molecular formula is C6H6O2

What was faster spitfire or the hurricane?

The Supermarine Spitfire was faster than the Hawker Hurricane, with a top speed of over 360 mph compared to the Hurricane's top speed of around 340 mph. The Spitfire also had better overall performance characteristics, making it a more capable fighter aircraft.

Why is the bulb evacuated?

If they were not evacuated of all outside air, the filament will burn up in seconds because the air Will cause Resistance, thus the filament will burn brighter and brigther tyring to burn off the air until it opens. (blown bulb)...

How and when was universal begin?

About a half a million years after the big bang, the cosmos began to cool, as it cooled, the hot subatomic particles that constituted the early universe began to slow down and stop colliding with each other long enough so that protons, neutrons and electrons could form. The universe cooled further and the hot particles slowed further still allowing these particles to stay together long enough to create atoms.The universe was nothing but a cloud of hydrogen and helium. Slowly, the universe continued to cool and structure begins to present itself within this universal cloud.

What is the physical difference between spitfire and the hurricane aircraft?

Both were formidable RAF fighters in WW II. The Hurry was built largely of wood with a fabric covering, while the Spit was built from metal with a high-strength aluminum covering. The Spit, or at least the later ones, had a higher-visibility canopy.

Would world maps made in different countries have different perspectives?

Yes, world maps made in different countries may have different perspectives due to the varying emphasis placed on certain regions or characteristics. Additionally, cultural biases or historical influences can impact how countries choose to portray the world. Overall, maps can be subjective and may reflect the priorities or viewpoints of the cartographer or society in which they were created.

Calculate the molecular formulas of the compounds having the following emprical formulas and molar masses C2H5 58g mol?

To determine the molecular formula, we first need to calculate the empirical formula mass of C2H5. The empirical formula mass can be calculated by adding the molar masses of each element in the empirical formula: 2(12.01) + 5(1.01) = 29.07 g/mol. Next, divide the molar mass of the compound (58 g/mol) by the empirical formula mass (29.07 g/mol) to find the multiplier: 58 g/mol / 29.07 g/mol = 2. This multiplier gives the molecular formula of the compound, so the molecular formula is (C2H5)2 or C4H10.

Explain why the percent composition of certain compounds are not sufficient to determine the compounds molecular formulas?

Because unlike the empirical formula, the molecular formula does not have to be the simplest ratio.

If by chance you are given the percent composition of the elements in a substance, you could calculate the empirical formula and then the empirical formula's mass. However, the molecular formula equation is molecular formula= (empirical formula)n, where n is the mass of the molecular formula divided by the mass of the empirical formula. You would, therefore, need to know the mass belonging to the molecular formula, which you are not given.

If Anna Anderson was cremated how could they test her DNA later?

Not from her ashes, but it is possible to chemically examine clothes worn by Anna Anderson and the real Czarevna- if any survive- under special microscopic light- and body stains, etc could conceivably be tested- as has been done with even inanimate object such as the Shroud of Turn, dating to Biblilcal times. Leave Her residuum alone!If you want to analyze fabrics of her clothes, okay.

The first woman to win the nobel prize in literature in 1993?

Toni Morrison was the first African American woman to win the Nobel Prize in Literature in 1993. Her works, including "Beloved" and "Song of Solomon," are celebrated for their poetic language and exploration of African American culture and history. Morrison's win marked a significant moment in recognizing the literary contributions of women and minority writers.

Is ammonia gas is dangerous to human being?

Ammonia is highly toxic to human beings. Though the scientists are not able to identify the cause of the toxicity but they have certain speculations. The ammonia toxicity finally leads to a state called as comatose state that is accompanied by cerebral edema (increase in the water content of cerebrum.

What were spitfires and hurricanes?

Spitfires and Hurricanes were both British fighter aircraft used during World War II. The Spitfire was known for its speed and agility, while the Hurricane was recognized for its sturdiness and effectiveness in combat. Both planes played crucial roles in the Battle of Britain and other key air campaigns during the war.

Does the pound sterling still exist?

YES!!! Today in exchange rate markets it is referred to as' GB pounds'. equivalent to US Dollars.

'Sterling' does not indicate the country of issue of the money, , but 'GB' indicates the country of issue.

Personally, I feel 'Pounds Sterling' is a far better description. !!!!!

Who is the world war 2 british genaral?

The most famous one was General Bernard Law Montgomery, nicknamed 'Monty'.

Some others being ; -

Sir William Slim, (nicknamed 'Uncle Bill')

General Claud Auckinleck

General Wavell

There were many more too!!!

Admirals for the Royal Navy being; -

Admiral Andrew Bertram Cunningham (nicknamed 'ABC' )

Admiral Ramsay

Admiral Somerville

Manufacturing cities in the US are most heavily concentrated in the?

Midwest and Southeast regions of the United States, with cities like Detroit, Chicago, and Atlanta being notable hubs for manufacturing. These regions have a long history of industrial development and infrastructure that support manufacturing activities.

If it's 6.30am in Germany what time will it be in Scotland?

It would also be 6:30 am in Scotland because both Germany and Scotland are in the same time zone, which is Central European Time (CET).

How do you use lend and borrow when you want to ask a question?

Example: if you have a book that I want to use, you lend it to me, I borrow it from you.

What is the nickname for the Middle East?

Meddle East geography is stretch from west Asia to north Africa. Islam is a first religion of the people then followed by Christianity , Jew and other .Arab largest ethnic group Turks, Persian ,Kurds, Armenian,Azeri,Greeks,Assyrian,Barbers and other ethnic group's live there. Meddle East include these country's Iran,Iraq,Turkey,semi country of Kurdistan , Syria,Lebanon,Jordan,Israel,Philistine,all the gulf state and Saudi Arabia Yemen,Egypt,Libya,Tunisia, Algeria,Morocco,Cypress all those country listed called wider or greater Meddle East, this area where all the civilizations began like find a first agriculture village writing. recently this area on the top of the news headline's from this date I am writing this paragraph like Arab spring, Israel Philistine conflict, Iraq war.

H.J.A Fread 13.10.2011

Why does Britain have day and night?

Britain experiences day and night due to the rotation of the Earth on its axis. As the Earth rotates, different parts of the planet are exposed to sunlight, causing day, and in darkness, causing night. This cycle of day and night is consistent across the entire planet, including Britain.

Who designed the hawker hurricane aircraft?

The Hawker Hurricane aircraft was designed by Sydney Camm, who was the Chief Designer at Hawker Aircraft Company. The Hurricane played a crucial role during the Battle of Britain in World War II alongside the Supermarine Spitfire.

What are super-cooled liquids?

I know it sounds a little stupid, but supercooling is when water remains a liquid while it is below freezing point. Note, only some waters can do this.

Is most of Africa north or south of the equator?

Africa is mostly north of the equator. About 2/3 of the land area is in the Northern Hemisphere.

What is the salary like in the Irish Defence Forces?

The salary in the Irish Defence Forces varies depending on the rank and years of service. Generally, new recruits start on a basic salary and receive additional allowances for qualifications, skills, and overseas service. Overall, salaries in the Irish Defence Forces are competitive compared to other entry-level positions in Ireland.