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3 years ago

Explain how research from the glomar challenger helped scientist support the theory of seafloor spreading?

2 answers:

3 0

Drill cores from the ocean floor were dated and found to be very young compared to the age of the earth. This means the crust had to be formed recently, which can be explained by creation of crust at a spreading center.

Naily [24]3 years ago

3 0

Answer:

The correct answer is as follows.

Explanation:

The theory of seafloor spreading states that seafloor lithosphere is not stationary, on the contrary, it is constantly renewing at mid-ocean ridges. The research from the Glomar Challenger, that use a scientific drilling vessel, helped to support this theory by taking rock samples from the Mid-ocean ridge. After analyzing the rock samples it was revealed that the farther from the mid-ocean ridge, the older the rock was.

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What is the mass in grams of a pure iron cube that has a volume of 4.60 cm3

yuradex [85]

In order to determine the mass of a substance given the volume, we require the density. The density of iron is 7.87 grams/cm³

Now,

Density = mass / volume

Mass = density * volume

Mass = 7.87 * 4.6

36.2 grams of iron are present in the cube

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3 years ago

luminum and oxygen react according to the following equation: 4Al(s) +3O2(g) --> 2Al2O3(s) What mass of Al2O3, in grams, can

Slav-nsk [51]

Answer: 8.7 grams

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{4.6g}{27g/mol}=0.17moles$

$4Al(s)+3O_2(g)\rightarrow 2Al_2O_3(s)$

As oxygen is in excess, Aluminium is the limiting reagent and limits the formation of products.

According to stoichiometry:

4 moles of aluminium give = 2 moles of $Al_2O_3(s)$

Thus 0.17 moles of aluminium give= $\frac{2}{4}\times 0.17=0.085mol$

Mass of $Al_2O_3=moles\times {\text {molar mass}}=0.085\times 102g/mol=8.7g$

Thus the mass of $Al_2O_3(s)$ is 8.7 grams

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2 years ago

A car moves at a speed of 50 kilometers/hour. Its kinetic energy is 400 joules. If the same car moves at a speed of 100 kilomete

DaniilM [7]

800 joules because it's twice the amount

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3 years ago

Read 2 more answers

You must answer all questions to get credit for this assignment. Use the notes above and/or the textbook to help you find the an

Allisa [31]

Explanation:

(1). It is known that in a reaction equation, reactants are placed or written on left hand side and products are written on the right hand side.

For example, $N_{2} + 3H_{2} \rightarrow 2NH_{3}$

Hence, in a reaction equation you start with the reactants and end up with the products.

(2). The number of atoms in a reaction will remain the same because according to the law of conservation of mass, mass of reactants will be equal to the mass of products.

Therefore, number of atoms on the reactant side will be equal to the number of atoms on product side.

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What type of mixture scatters light and cannot be filtered?

GenaCL600 [577]

Medium sized particles

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