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3 years ago

What 2 things have to increase for metamorphisim to occur

2 answers:

8 0

For metamorphism of rock to occur, temperature and pressure must increase. Rocks created in this manner are called metamorphic rocks.

Semmy [17]3 years ago

7 0

Temperature and
Pressure have to increase

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Does an electric iron may have a lower wattage than a LED lightbulb

grin007 [14]

Answer:

Below:

Explanation:

An iron will use 800 to 2000 watts, with an average iron using 1100 watts when heated on high.

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3 years ago

What is the percent by mass of aspartame in iced tea that has 0.75 g of aspartame in 250 g of water?

Vesnalui [34]

Answer:0.30%

Explanation:

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3 years ago

The molarity of a sodium hydroxide (NaOH) solution is 0.2 M. The molar mass of NaOH is 40 g/mol. If the solution contains 20 g o

mote1985 [20]

Answer:

$\large \boxed{\text{2.5 L}}$

Explanation:

1. Calculate the moles of NaOH.

$\text{Moles} = \text{20 g} \times \dfrac{\text{1 mol}}{\text{40 g}} = \text{0.50 mol}$

2. Calculate the volume of NaOH

$\begin{array}{rcl}\\\text{Molar concentration} &= &\dfrac{\text{moles}}{\text{litres}}\\\\ n &= &\dfrac{c}{V}\\\\\dfrac{\text{0.2 mol}}{\text{1 L}} &=& \dfrac{\text{0.50 mol}}{V}\\\\ \dfrac{0.2V}{\text{1 L}} & = & 0.50\\\\0.2V &= & \text{0.50 L}\\V & = & \dfrac{\text{0.50 L}}{0.2}\\\\& = & \textbf{2.5 L}\\\end{array}\\\text{The volume of the solution is $\large \boxed{\textbf{2.5 L}}$}$

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3 years ago

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which of these is an example of a chemical change A breaking glass B mealting ice on a windshield C burning gasoline D denting a

Nonamiya [84]

Lets do process of elimination!

A. Breaking glass - That is a psychical change because if you break it, it is still glass. It didn't change to another substance.

B. Melting ice on a windshield - During the melting process, there is no chemical change, and therefore, no new substance is created.

C. Burning gasoline - When gas burns it usually combines with oxygen to give carbon dioxide, water etc. It is a chemical change.

D. Denting a bumper - The bumper is still a bumper, only thing is it has a dent in it. The properties did not change, meaning no chemical change.

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3 years ago

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Is zach gay and a joe biden

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Answer:

yes they're gay

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2 years ago