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yarga [219]
3 years ago
14

Where do food molecules for cecropia trees come from?

Chemistry
1 answer:
Oliga [24]3 years ago
8 0

Answer:

Central and South American forests.

Explanation: https://brainly.in/question/7540305

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How do you do empirical formula
mihalych1998 [28]

Answer:

ez

Explanation:

Step 1: Obtain the mass of each element present in grams. Element % = mass in g = m.

Step 2: Determine the number of moles of each type of atom present. ...

Step 3: Divide the number of moles of each element by the smallest number of moles. ...

Step 4: Convert numbers to whole numbers.

7 0
3 years ago
The question is in the attached screenshot. Thanks a lot
Goryan [66]

Answer:

your welcome

Explanation:

4 0
3 years ago
Enzymes are proteins that speed up chemical reactions in the body how do they work
Mila [183]
The answer would be D, Enzymes<span> are soluble </span>protein<span> molecules that can </span>speed up chemical reactions<span> in cells. </span>These reactions<span> include respiration, photosynthesis and making new </span>proteins<span>. For this reason </span>enzymes<span> are sometimes called biological catalysts.</span>
5 0
4 years ago
The elements of which group in the periodic table release the most energy by gaining an electron?
Mademuasel [1]

Answer:

The halogens located in group 17

Explanation:

The change in energy of a neutral atom when an electron is added is known as electron affinity. <em>Fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At) are known as halogens and conform the group 17 of the periodic table, the group that presents higher electron affinity.</em> This characteristic happens because of their atomic structures, it is easier for them to gain electrons because they are closer to form octets.

Here I present you halogens' electron affinities values:

  • Fluorine (F) -328 kJ mol-1
  • Chlorine (Cl) -349 kJ mol-1
  • Bromine (Br) -324 kJ mol-1
  • Iodine (I) -295 kJ mol-1

<em>The use of negative signs is to indicate the RELEASE of energy.</em>

I hope you find this information useful and interesting! Good luck!

5 0
4 years ago
g How many grams of beryllium are needed to produce "11.5" g of hydrogen gas?Be(s) + 2H 2 O(l) → Be(OH) 2 (aq) + H 2 (g)
slega [8]

Answer:

m_{Be}=51.3gBe

Explanation:

Hello,

In this case, with the given chemical reaction:

Be(s) + 2H_2 O(l) \rightarrow Be(OH)_ 2 (aq) + H _2 (g)

We can notice a 1:1 mole ratio between hydrogen gas and beryllium metal, therefore, beryllium requirement is computed as shown below:

m_{Be}=11.5gH_2*\frac{1molH_2}{2.02gH_2} *\frac{1molBe}{1molH_2} *\frac{9.01gBe}{1molBe}\\ \\m_{Be}=51.3gBe

Regards.

6 0
4 years ago
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