Chemistry High School

The bacteria are known to be prokaryotes. Prokaryote means

A
organisms whose cells have no nucleus
B
organisms who are made of many cells
C
organisms who make their own food
D
organisms whose cells have a nucleus

The Bacteria Are Known To Be Prokaryotes. Prokaryote MeansAorganisms Whose Cells Have No NucleusBorganisms

Answers

Answer 1

Answer:

prokaryote, also spelled procaryote, any organism that lacks a distinct nucleus and other organelles due to the absence of internal membranes. ... Bacteria are among the best-known prokaryotic organisms. The lack of internal membranes in prokaryotes distinguishes them from eukaryotes.

Explanation:

Related Questions

An aqueous solution has a volume of 2.0 L and contains 36.0g of glucose. If the Molar Mass of glucose is 180g/mol, what is the molarity of the solution
Convert grams of Glucose to moles of Glucose and then solve for Molarity
show all work.

Answers

Answer:

moles = 36/180 = 0.2 moles

molarity = 0.2/2 = 0.1 mol/dm3

Why is there a large difference between day and night temperatures in a desert?

All rainfall in a desert happens at night.

There are no plants to trap the heat.

Heat escapes rapidly at night because the air is so dry.

The ground absorbs all heat. 20 points :,)

Answers

Answer: Heat escapes rapidly at night because the air is so dry.

Explanation: The desert has little humidity and rarely is cloudy. These two factors allow the desert to heat up rapidly during the day and cool off quickly at night.

what is an example of force pair​

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he interaction between a baseball bat and a baseball

What is the minimum uncertainty in a simultaneous measurement of the y-component of the proton's velocity?.

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Answer: c

Explanation:

How does temperature affect winds all
over the globe?

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Answer:

The differences in atmospheric pressure generate winds.

Explanation:

At the Equator, the sun warms the water and land more than it does the rest of the world. Warm equatorial air rises higher into the atmospher and migrates towards the poles. The complex relationships between fronts cause different types of winds and weather patterns.

I hope this helps :)

I need answer for a. (ii) pls​

Answers

Answer:

Stopwatch

Stopwatch is a time measuring tool.

Use the Periodic Table to find molar mass of water. Sodium hydroxide (NaOH) and hydrochloric acid (HCl) react to form sodium chloride (NaCl) and water according to the equation: NaOH HCl → NaCl H2O What mass of water forms when 2. 75 Ă— 10â€""4 mol NaOH reacts completely? 2. 75 Ă— 10â€""4 mol NaOH = g H2O.

Answers

Considering the reaction stoichiometry, 0.00495 grams of water is produced when  2.75×10⁻⁴ moles of NaOH reacts completely.

Sodium hydroxide (NaOH) and hydrochloric acid (HCl) react to form sodium chloride (NaCl) and water. So, the balanced reaction is:

NaOH + HCl → NaCl + H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

NaOH: 1 moleHCl: 1 moleNaCl: 1 moleH₂O: 1 mole

In the periodic table, you can find the molar mass of the elements, also called atomic mass or atomic weight. So, to calculate the molar mass of a compound, you must add the molar mass of the elements of the compound multiplied by the times they appear in the compound.

So, in the case of water:

H₂O= 2× 1 g/mole + 16 g/mole

H₂O= 18 g/mole

Then, if by stoichiometry of the reaction 1 mole of water is produced, the mass of water produced is calculated as:

mass H₂O= 1 mole× 18 g/mole

mass H₂O= 18 g

Then you can apply the following rule of three: if by stoichiometry 1 moles of NaOH produce 18 grams of H₂O, 2.75×10⁻⁴ moles of NaOH will produce how much mass of H₂O?

[tex]mass of H_{2} O=\frac{2.75x10^{-4} moles of NaOHx18 grams of H_{2} O}{1 mole of NaOH}[/tex]

mass of H₂O= 0.00495 grams

In summary, 0.00495 grams of water is produced when  2.75×10⁻⁴ moles of NaOH reacts completely.

Learn more about stoichiometry:

brainly.com/question/16487206?referrer=searchResults brainly.com/question/14446695?referrer=searchResults brainly.com/question/11564309?referrer=searchResults brainly.com/question/4025026?referrer=searchResults brainly.com/question/18650135?referrer=searchResults

Which of the following is unlikely to form a compound?

a. S
b. H
c. K
d. Ar
d. Si

Answers

Answer:

I think the answer is Ar, k or just k. Can you pick two answers?

Explanation:

I hope this helps.

P.S. you put two d's

1. Predict the shape of the graph for a y versus x plot of air pressure versus altitude.

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Predict the shape of the graph for a y versus c plot of I

How did the Heisenberg uncertainty principle contribute to the idea that electrons occupy “clouds," or "orbitals”?​

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Answer:

Because the exact position of the electron is not known,it must be assumed that the electron takes up the entire space in an orbital.

Explanation:

Element of group 2 loses two electrons in the process of a chemical combustion. what is the ionic charge? +2 or -2

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The ionic charge is +2

PLEASSE HELP gotta get the answers neowww, basically just match the letters with the things.

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Answer:

North pole-A

South pole- F

Equator- E

Polar Easterlies-C

Prevailing Westerlies-D or B-not sure

Trade Winds-D or B-not sure

which aqueous solution has the lowest vapor pressure?

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Answer:

Since all of them are aqueous solutions, the solvent in each solution is H2O. Based on the Raoult's Law, we only have to determine which solution contains the highest mole fraction of the solvent, H2O. The solution that will have the lowest vapor pressure is a. 0.20 m Na2SO4.

Explanation:

plz give brainliest

What is the main cause of global convection currents?

A. Deforestation

B. The Greenhouse effect

C. The increase in the number of cities

D. Uneven heating of the Earth by the sun

Answers

A. Deforestation

Energy from the sun is transferred from the Earths surface to the atmosphere, resulting in atmospheric convection currents that produce winds.

Answer: The answer is D, uneven heating of the Earth by the Sun.

what is an atom plz answer to get 10 points +brainliest

Answers

atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry.
An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across

15. Which reaction produces a coloured substance?
A. The addition of sodium metal to water.
B. The addition of sulfur dioxide gas to water.
C. Burning sodium metal in chlorine gas.
D. The addition of chlorine gas to a solution of potassium iodide.

Answers

Answer:

the addition of chlorine gas to a solution of potassium iodide.

The reaction that produces a colored substance is the addition of chlorine gas to a solution of potassium iodide. The correct option is D.

What is a chemical reaction?

In a chemical reaction, reactants undergo a chemical reaction and transform into products through a chemical process. For instance, when humans breathe in oxygen, it combines with glucose to create carbon dioxide, water, and energy.

Another sign that a chemical reaction has taken place is a change in color. If two solutions are combined and a color change occurs that is not just the effect of diluting one of the reactant solutions, a reaction has taken place. A solid and a liquid combined may also result in a change in color.

Therefore, the correct option is D. The addition of chlorine gas to a solution of potassium iodide.

To learn more about chemical reactions, refer to the link:

https://brainly.com/question/22817140

#SPJ2

what type of elements form ionic bonds with metals

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Answer:

between metal and nonmetal ions

Explanation:

why does fluorine have the highest electronegativity

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Answer:

Because it only needs one more electron to get to a full valence shell (8), so it really wants it and is pulling other electrons in. It also has to do with needing one more electron to fill the 2p shell. It is a small element which means its electrons are pulled tightly to the nucleus.

Hope this helps!

Explanation:

H2O decomposes to hydrogen and oxygen as describe in the
following reaction:
2H20 (1) ► 2H2 (9) + O2 (9)
What is the mole fraction of hydrogen gas in the products?
a 0.5
b 0.33
C 0.4
d 0.67

Answers

When a gas is collected over water, one must subtract the vapor pressure of water from the total pressure in order to find the pressure of the gas itself. Thus, 1.05 atm - 0.0278 atm = 1.0222 atm = pressure of the O2 gas.

PV = nRT and solve for n to determine moles of O2 collected.
n = PV/RT = (1.0222 atm)(0.5 L)/(0.0821 Latm/Kmol)(296 K) note the use of Kelvin for temperature.
n = 0.02103 moles O2
mass of O2 = 0.02103 moles x 32 g/mole = 0.67 grams (to 2 significant figures)

why does adding lemon juice to blueberry smoothie make it change colour from purple to pink

Answers

The stuff that is used to make lemon has a negative affect on the blueberry therefore the color will change
Because the white colour from lemon juice make the blueberry juice pink

Please help need to turn in

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Answer:

2. d

3. i

4. e

5. j

6. g

7. a

8. f

9. b

Explanation:

do a few searches when you have time to deepen understanding!

5. j
6. g
4. e
9. b
2. d
7. a
10. h
1. c
3. f

what is the chemistry between us?

Answers

No chemistry between us.

When magnesium ium is left in moist air for several hours, the metal Sur face taanishes?why
​

Answers

Answer:

due to the formation of an oxide or hydroxide layer

Explanation:

magnesium is a reactive metal...when left in air it reacts with oxygen to form an oxide layer of MgO and it can react with moisture to form Mg(OH)2 LAYER ON THE SURFACE.

Of the elements listed, circle the one that will form the LARGEST ion:
Br, Zn, Ni, Cu, Fe, Mn

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Zn is the step by step explanation

What is the formula for atomic weight amu of neon

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Answer:

abundance of the first isotope times the Mass of the first isotope

Match each term in the first column with an example in the second column. On a sheet of paper, write the letter of the answer.

1. physical property
2. chemical property
3. solid.
4. liquid
5. physical change
6. chemical change
———————————————
A. ability to burn
B. rust appears on a nail
C. a puddle freezes
D. substance that has a definite shape and volume
E. temperature or destiny
F. substance that has a definite volume, but no definite shape

Answers

Answer:

4 = f

3 = d

5 = c

6 = b

2 = a

1 = e

Explanation:

If a number has the units g/L then its
A) a number we are not going to use at all.
B) an imaginary unit that we are not going to use.
C) creating a relationship between mass and volume
D) a relationship between volume and distance.

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Answer:

C) creating a relationship between mass and volume

g/L

g or gram is mass

L or Litres is for volume

Write word equations for the reactions of a) magnesium with chlorine b) potassium with oxygen c) sodium with bromine d) carbon with oxygen.​

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a) Magnesium + Chlorine -> Magnesium chloride ( Mg + Cl2 -> MgCl2)

b) Potassium + Oxygen -> Potassium oxide
( 2K + O2 -> K2O )

c) Sodium + Bromine -> Sodium bromide
( 2Na + Br2 -> 2NaBr)

d) Carbon + Oxygen -> Carbon dioxide
( C + O2 -> CO2 ) This reaction occurs when heated.

How many elements are present in the compound Na_2S_2O_3

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Answer:

3 elements are present in thr compound

A compound contains 40%carbon, 6.7%hydrogen, and 56.3%oxygen
calculate the molecular formula of the compound, if it’s vapour density is 90. Note that molecular
mass=2 x vapeur density

Answers

180 might be the answer man
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