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galben [10]
3 years ago
6

Lipids are a major component of cells?

Chemistry
1 answer:
Harman [31]3 years ago
8 0
 b its plasma membrane probably
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The diameter of a cream-filled cookie is approximately 44 millimeters (mm). An atom of bismuth (Bi) is approximately 320. picome
KATRIN_1 [288]

Answer:

1.4e+8 bismuth atoms

Explanation:

If           10³ mm = 10¹² pm

then     44 mm = X pm

X = (44 × 10¹²) / 10³ = 44 × 10⁹ pm (which is the cookie diameter in picometers)

Now we can calculate the number of bismuth atoms needed to span the diameter of the cookie:

number of bismuth atoms = cookie diameter / bismuth atom diameter

number of bismuth atoms = 44 × 10⁹ / 320 = 0.1375 × 10⁹ atoms = 1.375 × 10⁸ atoms

And now to respect the answer format requested by the problem:

1.375 × 10⁸ = 1.375e+8 ≈ 1.4e+8

6 0
3 years ago
Can someone please help me on #17? I don’t get it :(
Dmitry [639]
Given is the specific heat of water equal to 4.18 Joule per gram per *C.

This means to raise the temperature of 1 g of water by 1 degree Celsius we need 4.18 joule of energy.

Now, look at the question. We are asked that how much amount of energy would be required to raise the temperature of 25 g of water by (54-50) = 4 degree celsius.

To do so we have formula

Q = m C (temperature difference)

Have a look at pic for answer

5 0
3 years ago
At a particular pressure and temperature, nitrogen gas effuses at the rate of 79 mL/s. Under the same conditions, at what rate w
amm1812

Rate of Sulfur dioxide : 2730.44 mL/s

<h3>Further explanation  </h3>

Graham's law: <em>the rate of effusion of a gas is inversely proportional to the square root of its molar masses or  </em>

the effusion rates of two gases = the square root of the inverse of their molar masses:  

\rm \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }

or  

\rm M_1\times r_1^2=M_2\times r_2^2

MW of N₂ = 28 g/mol

MW SO₂ = 64 g/mol

\tt 28\times 79^2=64\times r_2^2\\\\r_2^2=\dfrac{28\times 79^2}{64}=2730.44~mL/s

3 0
3 years ago
Describe 3 tectonic plate interactions you thought were interesting and explain why.
Svetradugi [14.3K]

Answer:

Convergent, divergent, transform

Explanation:

Convergent- tectonic plates move towards one another

Divergent-  they move away from each other, or in other directions

Transform- tectonic plates slide past/against each other

8 0
3 years ago
Identify each substance as an acid or a base and write a chemical equation showing how it is an acid or a base according to the
faust18 [17]

Answer:

(a) Acid

(b) Base

(c) Acid

(d) Base

Explanation:

According to the Arrhenius acid-base theory:

  • An acid is a substance that releases H⁺ in aqueous solution.
  • A base is a substance that releases OH⁻ in aqueous solution.

(a) H₂SO₄ is an acid according to the following equation:

H₂SO₄(aq) ⇒ 2 H⁺(aq) + SO₄²⁻(aq)

(b) Sr(OH)₂ is a base according to the following equation:

Sr(OH)₂(aq) ⇄ Sr²⁺(aq) + 2 OH⁻(aq)

(c) HBr is an acid according to the following equation:

HBr(aq) ⇒ H⁺(aq) + Br⁻(aq)

(d) NaOH is a base according to the following equation:

NaOH(aq) ⇒ Na⁺(aq) + OH⁻(aq)

6 0
3 years ago
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