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vovikov84 [41]
3 years ago
14

All living things are made of​

Chemistry
2 answers:
suter [353]3 years ago
8 0
Cells!!!!!!!!!!!!!!!
Elena L [17]3 years ago
5 0

Answer:

atoms !!!!!!!!!!11111111111

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Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below.Magnesium
ser-zykov [4K]

Answer:

10 core 2 valence

Explanation:

i just did this question on edgenuity

7 0
3 years ago
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Can you give me more explanation in the picture?
PolarNik [594]
Read the paper more carefully if you don't understand it
5 0
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The order of a reaction Z1) is the product of the powers to which the reactant concentrations are raised in the rate law. Z2) ca
irinina [24]

Explanation:

The Order of Reaction refers to the power dependence of the rate on the concentration of each reactant.

The overall order of reaction is the sum of the individual orders of reaction with respect to the reactants.

Rate = k [A]²[B]¹

In the rate law above, the rate is second order with respect to A and first order with respect to B. The overall order of reaction is a third order reaaction given as; 2+ 1 = 3

6 0
3 years ago
A strontium-90 atom that has a lost two electrons has __________ protons, __________ neutrons, and __________ electrons.
MAXImum [283]
<span><em>Answer:</em>
A strontium-90 atom that has a lost two electrons has <u>38</u> protons, <u>52</u> neutrons, and <u>36</u> electrons.

<em>Explanation:
</em>Atomic number<em> of </em>Strontium (Sr) is 38. 
<em>Atomic number = number of protons 
</em>Hence, Strontium has 38 protons.

If the element is in neutral state,
                number of protons = number of electrons. 
Then, neutral Strontium atom should have 38 electrons. 
But the question says Sr has lost 2 electrons. Hence, number of electrons should be 38 - 2 = 36.

Mass number = number of protons + number of neutrons.

The given mass number is 90. Hence, number of neutrons should be 90 - 38 = 52.</span>
4 0
3 years ago
Which phrase correctly describes the outer shell of electrons of each atom in most covalent compounds?
d1i1m1o1n [39]
A, I just took the quiz and that was the answer
8 0
3 years ago
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