Two tectonic plates under water move apart, and magma fills the space between them. This is an example of

Answers

Answer 1

Answer:

Answer:

Sea floor spreading

Explanation:

In case of a divergent plate motion, two plates move away from another. Due to this motion, there occurs separation of the seafloor, resulting in the addition of new materials to the crust along the mid oceanic ridge. This mid oceanic ridge marks the boundary of separation of the oceanic plates. It often generates deep focus earthquakes and forms volcanoes or chains of volcanic arcs.

Thus, the separation of the two plates under water causes seafloor spreading, and the magma fills the space along the mid oceanic ridge.

Answer 2

Answer: Seafloor spreading is the answer to your question.

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Can anyone please help answer this chemistry question?

Which compounds are classified as Arrhenius acids?(1) HCl and NaOH
(2) HNO3 and NaCl
(3) NH3 and H2CO3
(4) HBr and H2SO4

Answers

Answer:The correct answer is option 4.

Explanation:

Arrhenius acids are those compounds which gives $H^+$ ions when dissolved in their aqueous solution.

$HA(aq)\rightarrow H^++A^-$

Arrhenius bases are those compounds which gives $OH^-$ ions when dissolved in their aqueous solution.

$BOH(aq)\rightarrow OH^-+B^+$

$HBr \& H_2SO_4$ are Arrhenius acids because they form $H^+$ ions in their respective aqueous solution.

$HBr(aq)\rightarrow H^++Br^-$

$H_2SO_4(aq)\rightarrow 2H^++SO_(4)^(2-)$

Hence, the correct answer is option 4.

(4) HBr i H2SO4...........

A sentence for physical weathering

Answers

Physical weathering can lead to the beginning of the erosion process.

physical weathering is a process of decay disintgration and decomposition brought about by environmental changes like running water moving ice wind etc

What volume of oxygen gas at 25 degrees celsius and 1.04 atm is needed for the complete combustion of 5.53g of propane

Answers

Answer: 14.7 L of oxygen gas at 25 degrees celsius and 1.04 atm is needed for the complete combustion of 5.53g of propane

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at NTP, weighs equal to the molecular mass and contains avogadro's number $6.023* 10^(23)$ of particles.

$\text{Number of moles of propane}=\frac{\text{Given mass}}{\text{Molar mass}}=(5.53g)/(44.1g/mol)=0.125moles$

$C_3H_8+5O_2\rightarrow 3CO_2+4H_2O$

According to stoichiometry :

1 mole of propane requires 5 moles of oxygen

Thus 0.125 moles of propane require= $(5)/(1)* 0.125=0.625moles$ moles of oxygen

According to the ideal gas equation:'

$PV=nRT$

P = Pressure of the gas = 1.04 atm

V= Volume of the gas = ?

T= Temperature of the gas = 25°C = 298 K

R= Gas constant = 0.0821 atmL/K mol

n= moles of gas= 0.625

$V=(nRT)/(P)=(0.625* 0.0821* 298)/(1.04)=14.7L$

Final answer:

To find the volume of oxygen gas needed for the complete combustion of propane at given conditions, use stoichiometric calculations based on the balanced chemical equation and apply the ideal gas law.

Explanation:

The question is asking for the volume of oxygen gas required for the complete combustion of a given amount of propane at a specified temperature and pressure. To solve this, stoichiometry must be used along with the ideal gas law. The balanced chemical equation for the combustion of propane (C3H8) is:

C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l)

This equation indicates that one mole of propane reacts with five moles of oxygen. First, calculate the moles of propane by dividing the given mass of propane by its molar mass. Then, use the stoichiometric relationship from the balanced equation to find the moles of oxygen needed. Finally, apply the ideal gas law (PV=nRT) to calculate the required volume of oxygen at the given conditions (remembering to convert temperature to Kelvin and pressure to atm if necessary).

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7. Two teams are competing in a tug-of-war contest. Team A is pulling at 4000N and Team B is pulling at 4900N is the opposite direction. Sketch the forces and show the net force exerted. Which team is winning Is this force balanced or unbalanced?

Answers

Answer:

The Team B is winning. The force is unbalanced.

Explanation:

Step 1: First we must fix a positive sense to the forces exerted. We take as positive the force of 4900 N.

Step 2: Now we must add forces to determine the value of the resulting force ( $F_(r)$ ).

$F_(r)$ = 4900 N - 4000 N = 900 N

Since $F_(r)$ is positive, team B will win the competition.

The resulting force is unbalanced because if it is balanced it should give 0.

Have a nice day!

Final answer:

In the tug-of-war competition, team B is winning because it is exerting a stronger force. The net force is 900N to the left, showing an unbalanced force scenario, which will cause a change in motion or acceleration of the teams towards team B.

Explanation:

Let's visualize this tug-of-war contest as a simple force diagram. To the right, we have team A exerting a force of 4000N, and to the left, we have team B exerting a stronger force of 4900N. In terms of net force, this means we subtract the smaller force (team A's force) from the larger one (team B's force), giving us a net force of 900N in the direction of the stronger force—in this case, to the left, following team B.

This situation represents an unbalanced force scenario because the two forces are not equal in magnitude and do not cancel each other out. As a result, there is a net force leading to an acceleration—according to Newton's Second Law of Motion, any unbalanced force will cause a change in motion or acceleration. So, in this scenario, team B will be winning.

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Your answer should have the same number of significant figures as the starting measurement. 400.08 mL

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That starting measurment has 5 sig figs

The students who conducted the shadow length experiment concluded that their results concluded that their results supported their hypothesis. Can their supported hypothesis be called a scientific theory? Why or why not?

Answers

Confirmation bias, also called confirmatory bias or myside bias, is the tendency to search for, interpret, favor, and recall information in a way that confirms one's preexisting beliefs or hypotheses, while giving disproportionately less consideration to alternative possibilities.[Note 1][1] It is a type of cognitive bias and a systematic error of inductive reasoning. People display this bias when they gather or remember information selectively, or when they interpret it in a biased way. The effect is stronger for emotionally charged issues and for deeply entrenched beliefs. People also tend to interpret ambiguous evidence as supporting their existing position. Biased search, interpretation and memory have been invoked to explain attitude polarization (when a disagreement becomes more extreme even though the different parties are exposed to the same evidence), belief perseverance (when beliefs persist after the evidence for them is shown to be false), the irrational primacy effect (a greater reliance on information encountered early in a series) and illusory correlation (when people falsely perceive an association between two events or situations).

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PLS ANSWER BEFORE MIDNIGHT 20 POINTS