An element that is malleable is _____. difficult to pour easily shaped very hard very dense

1 answer:

6 0

The answer is easily shaped. Malleable means it can be shaped with ease without breaking them.
This is a common property in metals. For example, aluminum, they can be shaped into thin aluminum foil sheets because they're malleable.
In the other hand, for many non metals and semi metals, they're brittle, the opposite of malleable. They tend to break easily.

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How does the vegetation surface type affect the amount of runoff

maxonik [38]

Answer:

The type of vegetation a surface does affect the water coming from above to sink in or runoff. 

Explanation:

This is how the vegetation affects the runoff:-

The leaves and stems present in the vegetation do not let the water fall directly on the soil and makes the process rather slow which makes the water to get to the ground slowly and sink in properly inside the soil rather than running off.

If the vegetation present is dense with there was being hairy then also the water would not run out and will get absorbed by the roots letting the soil intact

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3 years ago

Write the symbol for every chemical element that has atomic number greater than 55 and atomic mass less than 144.0 u

laila [671]

You will need a periodic table to help you answer this problem. The atomic numbers are arrange from lowest to highest in the periodic table. You can locate element number 55 to be Cesium with an atomic weight of 132.905 amu. So, you start from element 56. The following elements are:

56 Barium 137.328 amu
57 Lanthanium 138.905 amu
58 Cerium 140.116 amu
59 Praseodymium 140.908 amu
60 Neodymium 144.243 amu

Neodymium is already greater than 144 amu. Therefore, these elements only include Barium, Lanthanium, Cerium and Praseodymium.

3 0

3 years ago

Help How many atoms of hydrogen(gas) form if 10 grams of aluminum react? 2Al + 6HCl = 2AlCl3 + 3H2

arlik [135]

Answer: 3.35x10²³atoms H2

Explanation: solution attached:

Convert mass of Al to moles

Do the mole to mole ratio between Al and H2

Convert moles of H2 to atoms using Avogadro's number.

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3 years ago

Using the picture below, once air mass A reaches location B, the weather conditions at location B will most likely become

olga2289 [7]

I think the answer is a

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3 years ago

Draw the structure of the bromohydrin formed when (Z)-3-hexene reacts with Br2/H2O. Use the wedge/hash bond tools to indicate st

Ipatiy [6.2K]

Answer:

(3R,4R)-4-bromohexan-3-ol

Explanation:

In this case, we have reaction called halohydrin formation. This is a markovnikov reaction with anti configuration. Therefore the halogen in this case "Br" and the "OH" must have different configurations. Additionally, in this molecule both carbons have the same substitution, so the "OH" can go in any carbon.

Finally, in the product we will have chiral carbons, so we have to find the absolute configuration for each carbon. On carbon 3 we will have an "R" configuration on carbon 4 we will have also an "R" configuration. (See figure 1)

I hope it helps!

5 0

3 years ago