CHEMISTRY HIGH SCHOOL

Who was the first governor of the Massachusetts Bay Colony?A)
John Smith

B)
John Winthrop

C)
Thomas Dale

D)
William Bradford

Answers

Answer 1
Answer:

Answer: John winthrop

Explanation:

Related Questions

2H2 + O2 --> 2H2O can be classified as what type of reaction? A. Both synthesis and combustion. B. Only synthesis. C. Only combustion. D. It cannot be classified.
Ammonia is a weak base because it produces ___ ions in solution
Which best describes nuclear fission
How many moles of hydrogen are in a 14 gram sample of propane gas?
He statement "matter can be neither created nor destroyed by chemical means, but it can be changed from one form to another" is the chemical law of A. conservation of matter.B. atomic disintegration.(C.) conservation of energy.D. definite proportions.

The mass and volume of each sample differ from the mass and volume of the other samples. Is it possible for each sample to contain 1 mol of each substance?No, because they have different masses.
No, because they have different volumes.
Yes, because the number of moles is not dependent on the mass or the volume.
Yes, because the number of moles is only dependent on the mass per unit volume.

Answers

Answer: Yes, it is possible for each samples to contain 1 mole of a substance because the number of moles are not dependent on the mass or the volume.

Explanation:

The formula for the number of moles is given by:

\text{number of moles}=\frac{\text{given mass}}{\text{molar mass}}

As, the masses of 2 samples are different, so the number of moles will be dependent only on the molar masses of the samples.

Volume has no effect on the number of moles.
Yes, because the number of moles is not dependent on the mass or the volume.
Different elements and compounds have different molar masses. E.g. a mole of hydrogen would be very different from a mole of gold

In a very violent reaction called a thermite reaction, aluminum metal reacts with iron (III) oxide to form iron metal and aluminum oxide according to the following equation:

Answers

Here's the equation:
Fe2 O3 + 2Al → 2Fe + Al2 O3 

Here's the question.
What mass of Al will react with 150g of Fe2 O3? 

In every 2 moles Al you need 1 mole Fe2O3 

moles = mass / molar mass 
moles Fe2O3 = 150 g / 159.69 g/mol 
= 0.9393 moles 

moles Al needed = 2 x moles Fe2O3 
= 2 x 0.9393 mol 
= 1.879 moles Al needed 

mass = molar mass x moles 
mass Al = 26.98 g/mol x 1.879 mol 
= 50.69 g 
= 51 g (2 sig figs) 

So the mass of Al that will react with 150g of Fe2 O3 is 51 grams.

Which of the following is an example of a mixture? Option 1: Pure water Option 2: The air in your room Option 3: Gold Option 4: All of the above

Answers

Answer:

2

Explanation:

Pure water is not a mixture....it is only water

gold ...is only gold

2.  air IS a mixture of various gases.....nitrogen , oxygen, co2 etc

Final answer:

Option 2: The air in your room. The air in your room is an example of a mixture because it consists of various gases that can be separated from each other.

Explanation:

The correct answer is Option 2: The air in your room.

A mixture is a combination of two or more substances that are not chemically bonded together. The air in your room is a mixture because it consists of various gases such as oxygen, nitrogen, carbon dioxide, and others. Each gas retains its individual properties and can be separated from the others.

On the other hand, pure water is a compound because it consists of two hydrogen atoms bonded to an oxygen atom, while gold is an element because it is composed of only gold atoms.

Learn more about Mixtures here:

brainly.com/question/22742069

#SPJ11

Is elemental phosphorus dull or high luster?

Answers

The exception is the element hydrogen. ... solid at room temperature (with the exception of mercury); usually shiny; high melting point; good conductor of ... could be dull or shiny; conducts heat and electricity, but not as well as metals ... allotropes–Phosphorus, Selenium and Carbon (in the form of graphite.) ...

Which of the following atoms would have the smallest atomic radius?

Answers

Answer:

Lithuim is the smallest

Explanation:

i hope this helps!!

As a sample of matter is cooled, its particles

Answers

As a sample of matter is cooled, its particles slowly moves because their kinetic energy is being reduced due to the temperature being reduced also. 
Other Questions
What element has 25 protons?
Which describes the role of sunlight in chemical reactions?
Based on the sign of E cell, classify these reactions as spontaneous or non spontaneous as written.? assume standard conditions. Ni^2+ (aq) + S^2- (aq) ----> + Ni (s) S (s) (nonspontaneous)? Pb^2+ (aq) +H2 (g) ----> Pb (s) +2H^+ (aq) (nonspontaneous)? 2Ag^+ (aq) + Cr(s) ---> 2 Ag (s) +Cr^2+ (aq) (spontaneous?) Are these correct?
How many moles of atoms are in 7.00 g of 13c? express your answer numerically in moles?