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
kotegsom [21]
2 years ago
5

Hello I need help very bad!!!

Chemistry
1 answer:
Oksanka [162]2 years ago
6 0

D. Cell membrane: surrounds a cell and allows substances to pass in and out

You might be interested in
Rutherford's alpha particle scattering experiment was responsible for the discovery of​
Bingel [31]

Answer:

Atomic Nucleus

Explanation:

Atomic Nucleus

7 0
2 years ago
What do these two changes have in common? Shaking up salad dressing. Adding dish soap to water in a sink
Ghella [55]
I think it’s a maybe hope this helps
4 0
3 years ago
Massive amounts of energy are contained in an atom's: Select one:
melamori03 [73]
Nucleus.
____________
6 0
3 years ago
A gold coin contains 3.47 × 10^23<br> gold atoms.<br> What is the mass of the coin in grams?
VashaNatasha [74]

Answer:

Mass = 114.26 g

Explanation:

Given data:

Number of gold atoms = 3.47×10²³ atoms

Mass in gram = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

3.47×10²³ atoms × 1 mol  /6.022 × 10²³ atoms

0.58 mol

Mass of gold:

Mass = number of moles × molar mass

Mass = 0.58 mol × 197 g/mol

Mass = 114.26 g

4 0
3 years ago
Gizmo Warm-up
Mariana [72]

Sodium hydroxide solution and hydrogen gas are produced from the reaction of water and sodium.

<h2>Reaction of sodium and water</h2>

We observe bubbles coming out of the water when the sodium reacts with the water because of the formation of hydrogen gas which is insoluble in water so it moves into the atmosphere.

<h3>Products of the reaction</h3>

Sodium metal reacts rapidly with water to form sodium hydroxide (NaOH) solution and hydrogen gas (H2). This chemical reaction is exothermic because huge amount of heat is release from the solution so we can conclude that sodium hydroxide solution and hydrogen gas are produced from the reaction of water and sodium.

Learn more about chemical reaction here: brainly.com/question/26018275

Learn more: brainly.com/question/26167984

8 0
2 years ago
Other questions:
  • Which formula represents a hydronium ion?<br> (1) H3O+ (3) OH–<br> (2) NH4+ (4) HCO3–
    6·2 answers
  • a habitat must include all of the following except a. food sources. b. favorable conditions for reproduction. c. more than one p
    7·2 answers
  • Which process occurs in all living organisms at all times?
    15·1 answer
  • Can anyone give me the name of these? 40 points. Hope it's not too much
    14·1 answer
  • 15 POINTS TO BEST ANSWERRRR
    8·1 answer
  • Which is not a particle within an atom
    9·2 answers
  • A true statement about mass is that:
    6·1 answer
  • Help me please will mark brainliest ​
    14·2 answers
  • What provides the energy to set the water cycle in motion?
    10·1 answer
  • What is the lead concentration of a saturated solution of lead(II) sulfate containing 0.020 M Na2SO4? Ksp for PbSO4 = 6.3x10-7.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!