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
SOVA2 [1]
3 years ago
13

What is the whole mass of air surrounding earth?

Chemistry
1 answer:
irinina [24]3 years ago
5 0
It is 50 or 50% mass and air . Average Stone weight in Earth.
You might be interested in
1) How many atoms are in 0.54 moles of Cu? show work ​
mario62 [17]
<h3>Answer:</h3>

3.3 × 10²³ atoms Cu

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

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

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Moles
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[Given] 0.54 moles Cu

[Solve] atoms Cu

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                      \displaystyle 0.54 \ mol \ Cu(\frac{6.022 \cdot 10^{23} \ atoms \ Cu}{1 \ mol \ Cu})
  2. [DA] Multiply [Cancel out units]:                                                                     \displaystyle 3.25188 \cdot 10^{23} \ atoms \ Cu

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 2 sig figs.</em>

3.25188 × 10²³ atoms Cu ≈ 3.3 × 10²³ atoms Cu

7 0
3 years ago
What is a single celled organism able to do? survive on its own make tissues grow to large sizes differentiate
bekas [8.4K]

Within multicellular organisms, tissues are organized communities of cells that work together to carry out a specific function. The exact role of a tissue in an organism depends on what types of cells it contains. For example, the endothelial tissue that lines the human gastrointestinal tract consists of several cell types. Some of these cells absorb nutrients from the digestive contents, whereas others (called goblet cells) secrete a lubricating mucus that helps the contents travel smoothly.

However, the multiple cell types within a tissue don't just have different functions. They also have different transcriptional programs and may well divide at different rates. Proper regulation of these rates is essential to tissue maintenance and repair. The spatial organization of the cells that form a tissue is also central to the tissue's function and survival. This organization depends in part on polarity, or the orientation of particular cells in their place. Of course, external signals from neighboring cells or from the extracellular matrix are also important influences on the arrangement of cells in a tissue.

7 0
3 years ago
Which ones are soluble in water and which ones are not soluble in water.
marissa [1.9K]

Answer:

d. NaOH Sodium hydroxide soluble

7 0
3 years ago
Using your knowledge of symbols, determine which compound listed must contain both copper and oxygen.
Gemiola [76]

Answer:

The correct option is Malachite which has both copper nd oxygen.

Explanation:

As we the symbol of copper is Cu while the symbols of oxygen is O. As the chemical formula of malachite is Cu₂CO₃(OH)₂. So it has Cu as well as O.

Glucose has only oxygen but no copper

Chalcopyrite has copper but no oxygen

Calcite has oxygen but no copper.

So correct answer is only malachite.

pls give brainlist

5 0
3 years ago
In a folded protein, most of the nonpolar amino acids are buried inside the protein fold, whereas the polar and charged side cha
ExtremeBDS [4]

Answer:

Hydrophobic amino acids

Explanation:

Hydrophobic amino acids are the amino acids which do not reside in the aqueous environment. These amino acids are generally buried within hydrophobic core of protein or the protein fold or lie in lipid portion of membrane.

Hydrophobic, as the term implies - hydro means water and phobic means fearing. These amino acids have little or almost no polarity in side chains. This lack of polarity make them water fearing.

4 0
3 years ago
Other questions:
  • What is the pH of a 1 ´ 10-5 M KOH solution?
    15·1 answer
  • When alkali metals are heated with hydrogen they form--------hydrides
    5·1 answer
  • Which is the property of nonmetals to evaporate easily.
    7·2 answers
  • Iron atoms have been detected in the sun's outer atmosphere, some with many of their electrons stripped away. what is the net el
    12·1 answer
  • Given given the formula for the compound: This compound is classified as an...
    7·1 answer
  • A sample of nitrogen gas had a volume of 500. mL, a pressure in its closed container of 740 torr, and a temperature of 25 °C. Wh
    15·1 answer
  • How do you convert 42.7L to mL
    15·1 answer
  • Which of the following would cause the molecules in matter to change? Please help :)
    9·2 answers
  • Can the ratio of hydrogen to oxygen change if a solute is dissolved in the water
    13·1 answer
  • What is also known as neutralization? 1. Acid-base 2. Redox 3. Precipitation
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!