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Vladimir79 [104]
3 years ago
12

PLEASE HELP!!!!

Chemistry
1 answer:
Verizon [17]3 years ago
3 0
Endothermic or C, if you would like a reason why, do not hestitate to ask
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Which statement best describes the nuclear model of the atom. A) negative charges dispersed in a positively charged cloud B) pos
Svetradugi [14.3K]

Answer:

D.) small, dense negative nucleus surrounded by a diffuse positively charged cloud

Explanation:

I am not 100% sure but the reason I think this is the answer is because Protons and Neutrons are in the nucleus. Protons being positively charged and neutrons being negatively charged. Again, I do not know for sure, but I think D is the answer.

4 0
3 years ago
How many mL of .1250 M KCl solution contains 2.330g of KCl? KCl = 74.55 amu
lozanna [386]
The amu is a unit which means the mass per neutron, So the 74.55 means the mass per mole KCl. So the mole number of 2.330g KCl is 2.330/74.55=0.031 mol. The volume is 0.031/0.1250=0.248 L ≈ 250 mL. So the answer is a.
8 0
3 years ago
Which of the following is not a fluid?
disa [49]
Air,food, anything eatable
8 0
3 years ago
the isotope of an atom containing 31 protons and 39 neutrons suddenly has two neutrons added to it. what isotope is created? a.
olasank [31]
The elements are identified by the number of protons of the atom, which is its atomic number.

In this case the number of protons 39 (atomic number 39) permit you to identify the element as gallium.

Now, to identify the isotope you tell the name of the element and add the mass number.

The mass number is the sum of the protons and the neutrons

In this case, the number of neutrons is the original 39 plus the 2 added suddenly, i.e. 39 + 2 = 41, so the mass number is 31 + 41 = 72

Therefore, the isotope is gallium - 72.

Answer: isotope gallium - 72

7 0
2 years ago
Read 2 more answers
Word bank
larisa [96]
<span>1.    D Domain</span> <span><span>
<span>2.    </span></span>K Kingdom</span> <span><span>
<span>3.    </span></span>P Phylum</span> <span><span>
<span>4.    </span></span>C Class</span> 
<span><span>5.    </span>O Order</span> <span><span>
<span>6.    </span></span>F Family</span> <span><span>
<span>7.    </span></span>G Genus</span> 
<span><span>8.    </span>S Species</span> 

The hierarchy of species is mainly used by taxonomist in order to classify, organize and systematize certain species in both the animal and plant kingdom so to speak –living things. These helps them if found a new discovered specie, they cluster it into the appropriate category into where it fits best. There are certain factors to categorize though. 
4 0
3 years ago
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