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Sedaia [141]
2 years ago
15

Which statements best describe fossils? Check all that apply.

Chemistry
2 answers:
nikdorinn [45]2 years ago
3 0

Answer:

2&3&5

Explanation:

fossils are and can be all of the above

ololo11 [35]2 years ago
3 0

Answer:

2,3,5

Explanation:

i got it right

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larisa86 [58]
Tin would be the right answer
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3 years ago
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What is the mass of 3.25 mol of h2so4
Setler [38]

Answer/ explanation :

The find the mass,

We use this formula

Number of mole = mass/ molar mass

Since number of mole = 3.25mol

Number of mass be x

Molar mass of H2SO4

H - 1.00784 * 2= 2.01568

S - 32.065

O - 15.999 * 4 = 63.996

Note there are 2 moles of H and 4 moles of O and 1 mole of S

Molar mass of H2SO4 = 2.01568 + 32.065 + 63.996

= 98.07668g/mol

Number of mole= 3.25mol

3.25 = x / 98.07668

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7 0
3 years ago
How does water filters work
Alexxandr [17]
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7 0
3 years ago
When the reaction
yaroslaw [1]
We can express the rate equation in this form:
-r = k A^n B^m

where -r is the rate
k is the rate constant,
A is the concentration of CH3Cl
n is the order with respect to CH3Cl
B is the concentration of H2O
m is the order with respect to H2O

We can solve this by trial and error or by calculus. The first method is easier. The rate constant does not depend on the concentration of the reactant. Assume values of n and m and solve for k in each experiment. The only option that gives really close values of k in each experiment is:
<span>C. CH3Cl: firstorder H2O: second order
</span>
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3 years ago
A piece of chocolate with a mass of 8 grams melts. What is the mass of the melted chocolate?
LiRa [457]

Answer:

The mass of the melted chocolate is 8 grams.

Explanation:

When something is melted including chocolate the mass remain the same or does not change, it is only the motion of the particles that changes and this is called law of conservation of mass.

The law states that mass can neither be created nor destroyed during chemical reaction but it remain the same.

7 0
3 years ago
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