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iragen [17]
2 years ago
14

In the sixteenth century, the geocentric theory was a daim with substantial evidence. Which of the following best describes why

scientists began to regard the heliocentric theory as more acceptable?
Chemistry
1 answer:
Ronch [10]2 years ago
3 0

Answer:

The heliocentric theory was better supported by data explaining the rotation of the planets and other bodies in the solar system.

Explanation:

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A chemistry student is given 250.0 mL of clear aqueous solution at 42 C. He is told an unknown amount of a certain compound X is
lara [203]

Answer:

No

Explanation:

The solubility of a solid in water refers to the amount of that solid that dissolves in water.

It is not possible to calculate the solubility of the solid because the student threw away the first precipitate that formed. We already have the volume of water, but having lost some mass of precipitate, it has become impossible to accurately determine the solubility.

Hence the answer provided above.

7 0
3 years ago
Consider the balanced reaction: 4Ga(s) + 3O2(g)⟶ 2Ga2O3(s)
Paha777 [63]

First we need to find the number of moles that 43.9g of gallium metal is. We can do this by finding the molar weight of gallium and cross-multiplying to cancel out units:


\frac{1mole}{69.723g}*\frac{43.9g}{1}=0.63mol_{Ga}


So we are dealing with 0.63 moles of gallium metal.


We can take from the balanced equation that 4 moles of gallium metal will react completely with 3 moles of oxygen gas. We can take this ratio and make a proportion to find the amount of oxygen gas, in moles, that will react completely with 0.63 moles of gallium metal:


\frac{4moles_{Ga}}{3moles_{O_{2}}} =\frac{0.63moles_{Ga}}{xmoles_{O_{2}}}


Cross multiply and solve for x:


4x=1.89


x=0.47moles_{O{2}}


So now we know that 0.47 moles of oxygen gas will react with 43.9g of gallium metal.

5 0
3 years ago
Identify two natural hazards that are more likely to occur in Maryland
tamaranim1 [39]

Answer:

snow storm and a blizzard

Explanation:

7 0
2 years ago
the results have been archived so far in relation to the problem with the given fact relevant and measurable​
Rama09 [41]
Where’s the problem I know how to do it
8 0
2 years ago
Kesha is in charge of dying boiled eggs with her cousins, C.J and Carvin. She read on the directions that you add 2 tablespoons
marin [14]

Answer:

Independent: The amount of vinegar

Dependent: The dye result on the egg

Controlled: The type of eggs, the size of jars, the dye tablet, how much she stirs, etc.

Explanation:

The independent variable is what is being changed, which in this case, is the amount of vinegar being added to each jar. The dependent variable is what is being measured or observed. Kesha is looking for what happens to the egg when she adds more vinegar with the dye. Lastly, there could be a couple of controlled variables. Like, the dye tablet, the size and brand of the eggs, the types of jars, how long she stirs each egg, and so on. The controlled are just variables kept constant so that any result observed is because of one singular change, the independent variable.

4 0
2 years ago
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