CHEMISTRY HIGH SCHOOL

I will give brailiest to whoever needs it!

Answers

Answer 1
Answer: mesjskkskskskskskskskkskss
Answer 2
Answer:

Answer:

pls pls pls pls pls give me brainliest i just need one more plssssssss

Explanation:

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Which cells contain a nucleus and membrane-bound organelles? A. prokaryotic
B. eukaryotic
C. archaean
D. cyanobacteria

Answers

Answer: The correct answer is Option B.

Explanation:

Prokaryotic cells are defined as the cells which does not contain any membrane bound organelles nor they contain nucleus. They are single-celled organisms. For Example: Bacteria, archaea

Eukaryotic cells are defined as the cells which contain membrane-bound organelles. These cells also contain nucleus and also they have DNA which is contained in the nucleus. They can be single-celled or multi-celled organisms. For Example: Animal cells, Plant cells.

Archaea and cyanobacteria are the examples of prokaryotic cells and thus, will not contain nucleus or any membrane-bound organelles.

Hence, the correct answer is Option B.

The cells contain a nucleus and membrane-bound organelles is eukaryotic.

Option B is correct.

How do we explain?

Eukaryotic cells are the most complex cells and contain a nucleus and membrane-bound organelles. Prokaryotic cells, archaea, and cyanobacteria do not have a nucleus or membrane-bound organelles.

The cells that contain a nucleus and membrane-bound organelles are eukaryotic cells \Prokaryotic cells including bacteria and archaea  lack a nucleus and membrane-bound organelles. Cyanobacteria  are a type of prokaryotic bacteria, so they also lack a nucleus and membrane-bound organelles.

Therefore option B is correct

Learn more about Eukaryotic cells at:

brainly.com/question/495097

#SPJ6

An atom of which element has the strongest attraction for electrons? A) Ba
B) Cs
C) O
D) F

Answers

(D) F because it has the highest electronegativity
F - Fluorine, it is the most electronegative element meaning is has the greatest attraction for electrons. 

What is a contributor of global warming

Answers

Pollution, greenhouse gases, climate change

What would be the mass of 9.65x1025 molecules of water​

Answers

Answer:

2890 g H₂O

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Chemistry

Atomic Structure

  • Reading a Periodic Table
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

  • Using Dimensional Analysis

Explanation:

Step 1: Define

9.65 × 10²⁵ molecules H₂O (water)

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol

Step 3: Convert

  1. Set up:                                \displaystyle 9.65 \cdot 10^(25) \ molecules \ H_2O((1 \ mol \ H_2O)/(6.022 \cdot 10^(23) \ molecules \ H_2O))((18.02 \ g \ H_2O)/(1 \ mol \ H_2O))
  2. Divide/Multiply:                                                                                                \displaystyle 2887.63 \ g \ H_2O

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

2887.63 g H₂O ≈ 2890 g H₂O

Tin-126 has a half life of 100,000 years. How many years does it take toreduce 100 g of Tin-126 to 12.5 g?
100,000 years
200,000 years
50,000 years
300,000 years

Answers

Answer:

300,000 years

Explanation:

100g=0 years

50g=100,00 years

25g=200,00 years

12.5g=300,000 years
300’000 yes I think she is correct

The half-life of cobalt-60 is 5.3 years. after __________ years, 1/4 of the original amount of cobalt-60 will remain.

Answers

The  number of  years  required  for 1/4  cobalt-60  to remain   after   decay  is calculated  as follows

  after  one  half life  1/2 of the original  mass isotope  remains

after  another half life 1/4  mass  of  original  mass  remains

therefore  if one  half  life is  5.3   years  then  the  years required

= 2  x 5.3years =  10.6   years

Answer:

10.6

Explanation:APEX
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