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Rudik [331]
3 years ago
6

The sum of the protons and neutrons in the nucleus of an atom is called the _____?

Chemistry
1 answer:
True [87]3 years ago
4 0
The sun of the protons a D neutrons in the nucleus of an atom is called the ATOMIC MASS
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Identify the type of reaction described in the sentence below. then, write a chemical equation. be sure to specify the states of
natulia [17]

Answer : The type of reaction described in the sentence is Synthesis or Combination

Explanation :

The balanced equation for the reaction between Phosphorous and Oxygen gas can be written as

4P (s) + 5O_{2} (g) ------>  P_{4} O_{10}  (s)

From the above equation we can see that there are two different reactants ( P and O₂ ) which are combining with each other to give a single product.

This type of reaction is known as Combination or Synthesis.

A general form of Synthesis reaction is given below.

A + B ---->  AB

Here we can conclude that a synthesis / combination reaction is the one where 2 or more reactants combine together to give only one product .

6 0
3 years ago
If we start with 20 atoms of plutonium – 239, how many would remain after 48,240 years?
Zepler [3.9K]

Answer:

If we start with 20 atoms of plutonium – 239, how many would remain after 48,240 years?

Explanation:

So, before we are going to tackle this topic, I would discuss how to remain it as soon as possible. Like this, go to the site with so many answers to be seen. So m SC ndkz ek Afe sifrhidbjdjwsb in free jdbsjjkn WA jdj ew

7 0
2 years ago
How many moles are in 7.46 x 1025 particles of iron
sladkih [1.3K]

Answer:

1 mole of iron =6.023×10^23 particles

1 particles of iron=1/6.023×10^23 mole

7.46×10^25 particles =1/6.023×10^23×7.46×10^25

=1.238×10^48 mole is a required answer.

4 0
2 years ago
What is the noble gas configuration for Cobalt?
Pani-rosa [81]

Answer:

a. [Ar] 4s2 3d7

Explanation:

4 0
3 years ago
Can someone help. posted this same question 3-4 times.
olya-2409 [2.1K]

(JSYK: this is all considering that only whole batches are included and fractional batches aren't)

Answer: 3 batches (72 cookies), her limiting reactant should be sugar since she only has enough to make three batches exactly, and she will also have 3/4 a cup of flour left over, 2 cups butter, and 5 eggs, in addition to the excess of baking soda and baking powder.

Hope this helps, if not, comment below please!!!

5 0
2 years ago
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