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Viktor [21]
2 years ago
7

A metamorphic rock can also be thought of as a rock that changes. What causes the rock to change?

Chemistry
2 answers:
Nana76 [90]2 years ago
5 0

Answer:

its ethier b or c

Explanation:

Eduardwww [97]2 years ago
4 0

Answer:

I think it is B

Explanation:

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Helium decays to form lithium. Which equation correctly describes this decay?
GrogVix [38]

Answer:

⁴He₂ → ⁴Li₃ + ⁰e₋₁.

Explanation:

  • Helium decays with the release of an electron to form a lithium nucleus.
  • The number of nucleons is the same on both sides of the equation.
  • A neutron decays to form a proton with the release of an electron.
  • The atomic number increases from 2 to 3 while the atomic mass number stays the same at 4 nucleons.
8 0
3 years ago
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Hot coffee in a mug cools over time and mug warms up. Which describes the energy In this system
GenaCL600 [577]

Answer:

The average kinetic energy of the particles in the mug decreases. The average kinetic energy of the particles in the coffee increases. Thermal energy from the mug is transferred to the coffee. Thermal energy from the coffee is transferred to the mug.

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3 years ago
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A student used 1.168g of an unknown weak acid and titrated it against 28.75 mL of 0.105M NaOH to reach the equivalence point. Wh
Vaselesa [24]

Answer:

The molar mass of the unknown acid is 386.8 g/mol

Explanation:

Step 1: Data given

Mass of the weak acid = 1.168 grams

volume of NaOH = 28.75 mL = 0.02875 L

Molarity of NaOH = 0.105 M

Since we only know 1 equivalence point, we suppose the acid is monoprotic

Step 2: Calculate moles NaOH

Moles NaOH = molarity NaOH * volume NaOH

Moles NaOH = 0.105 M * 0.02875 L

Moles NaOH = 0.00302 moles

We need 0.00302 moles of weak acid to neutralize the NaOH

Step 3: Calculate molar mass of weak acid

Molar mass = mass / moles

Molar mass = 1.168 grams / 0.00302 moles

Molar mass = 386.8 g/mol

The molar mass of the unknown acid is 386.8 g/mol

3 0
3 years ago
How are elements usually found
riadik2000 [5.3K]
The answer is A cause gas clouds hold elements in it
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2 years ago
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What type of epithelium would be most suited for high levels of diffusion and filtration?
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Sorry the answer might be a little late but it would be <span>Simple squamous</span>
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