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Montano1993 [528]
2 years ago
6

This is a graded Quiz and I need all of the answers to be right but I am not sure so I need help this is a 3.08 science Quiz and

it's do today. Thank you for the help
Question 1 (1 point)

True or False

Intrusive igneous rocks have fine-grained crystals.

Tue
False


Question 2 (1 point)

True or false

Igneous rocks are formed from cooling and hardening magma or lava.

True
False


Question 3 (1 point)

True or false

Metamorphic rocks are formed when sediments harden it to rocks.

True
False


Question 4 (1 point)

True or false

Lithification is the process of converting sediments into solid rock through compaction and cementation.

True
False


Question 6 (1 point)

What type of rock forms when heat and pressure change existing rocks WITHOUT melting them?


Metamorphic

Sedimentary

Igneous



Question 7 (1 point)

Once a metamorphic rock, always a metamorphic rock. cannot change from one type of rock to another

True
false


Question 8 (1 point)

The rock cycle has a definitive beginning and end

true
false


Question 9 (1 point)


Foliation occurs in sedimentary rocks

True
false


Some of the words are not spelled right and that's all my teachers fault i'm sorry.
Also if you are the first to answer and you answered all the of the questions and answered them right you will get marked brainly whatever it's called just please answer these all true fully and right and not just pick one for the points thank you bye
Chemistry
1 answer:
Setler79 [48]2 years ago
8 0

Answer:

1 true

Explanation:

bcz it is true

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The solubility of acetanilide is 12.8 g in 100 mL of ethanol at 0 ∘C, and 46.4 g in 100 mL of ethanol at 60 ∘C. What is the maxi
weqwewe [10]

Answer: 72.41% and 26.90% respectively.

Explanation:

At 60°C, you can dissolve 46.4g of acetanilide in 100mL of ethanol. If you lower the temperature, at 0°C, you can dissolve just 12.8g, which means (46.4g-12.8g)=33.6g of acetanilide must have precipitated from the solution.

We can calculate recovery as:

\%R=\frac{crystalized\ mass}{initial\ mass}*100 =\frac{33.6\ g}{46.4\ g}*100=72.41\%

So the answer to the first question is 72.41%.

For the second part just use the same formula, the mass of the precipitate is the final mass minus the initial mass, (171mg-125mg)=46mg.

\%R=\frac{crystalized\ mass}{initial\ mass}*100 =\frac{46\ mg}{171\ mg}*100=26.90\%

So the answer to the second question is 26.90%.

3 0
2 years ago
In the formula for carbon tetrahydride, CH4, the percent composition of all elements is:
creativ13 [48]
C%=12/16*100=3/4*100=75%
H%=25%
8 0
2 years ago
Read 2 more answers
In ____________ reactions, certain molecules are broken down; in the process they release energy which is captured when high-ene
Rudik [331]

Answer:

Exergonic ,Endergonic,low concentration area,high

Explanation:

In exergonic reaction,certain molecules are broken down;in the process they release energy which is captured when high energy molecules(such as ATP and NADH) are formed.

                          The breakdown of these molecules can be coupled to thermodynamically unfavorable processes such as Endergonic reactions or pumping og hydrogen ion from low concentration areas to high concentration areas.

3 0
2 years ago
Suppose a gas starts with a volume of 4.52L, temperature of 23 C, and pressure of 102,00 Pa. If the volume changes to 4.83L and
ivanzaharov [21]

Answer:

The answer to your question is     P2 = 84.16 kPa

Explanation:

Data

Volume 1 = V1 = 4.52 L            Volume 2 = V2 = 4.83 l

Pressure 1 = P1 = 102 kPa        Pressure 2 = P2 = ?

Temperature 1 = T1 = 23°C      Temperature 2 = T2 = -12°C

Process

1.- Convert the temperature to °K

Temperature 1 = 23 + 273 = 296°K

Temperature 2 = -12 + 273 = 261°K

2.- Use the Combined Gas law to solve this problem

                  P1V1/T1 = P2V2/T2

-Solve for P2

                  P2 = P1V1T2 / T1V2

-Substitution

                  P2 = (102)(4.52)(261) / (296)(4.83)

-Simplification

                  P2 = 120331.44 / 1429.68

-Result

                  P2 = 84.16 kPa

8 0
3 years ago
Help me with this attachment please​
Anna007 [38]

Answer:

See explanation

Explanation:

Let us recall that the basic rule in writing balanced chemical reaction equations is that the number of atoms of each element on the right hand side of the reaction equation is the same of the number of atoms of the same element on the left hand side of the reaction equation.

The reaction of red hot iron and steam is written as follows;

3Fe + 4H2O → Fe3O4 + 4H2.

The decomposition reaction of ammonium dichromate is written as;

(NH4)2Cr2O7 → N2 + Cr2O3 + 4H2O

Reaction of aluminium, sodium hydroxide and water is as follows,

2Al + 2NaOH + 2H2O ----> 2NaAlO2 + 3H2

Reaction of potassium bicarbonate with sulphuric acid;

2KHCO3 + H2SO4 -------> K2SO4 + 2H2O + 2CO2

Reaction of zinc and sodium hydroxide is as follows;

Zn + 2NaOH→Na2ZnO2 + H2

5 0
3 years ago
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