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Lilit [14]
4 years ago
14

How many atoms of group 17 element would be needed react with one atom of a group 2 element? Explain

Chemistry
2 answers:
ddd [48]4 years ago
5 0
2 atoms of group 7 elements, because group 2 elements have 2 valence electrons and group 7 need just one atoms to stabilize.
shusha [124]4 years ago
3 0
Only one atom because atom with 17 electrons need that one electron to become stable
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what mass of calcium carbonate (in grams) can be dissolved by 4.1 g of hcl ? ( hint : begin by writing a balanced equation for t
il63 [147K]

Mass of calcium carbonate (in grams) can be dissolved by 4.1 g of Hcl is 5.62g.

<h3>What is balanced equation?</h3>

A balanced equation is one for a chemical reaction in which the overall charge and the number of atoms for each component are the same for both the reactants and the products. In other words, the mass and charge of both sides of the reaction are equal.

The reaction between calcium carbonate and hydrochloric acid can be expressed through the chemical reaction,

CaCO₃ + 2HCl --> CaCl₂ + H₂O + CO₂

Hydrochloric acid has a molecular weight of 36.45 g/mol compared to calcium carbonate's molecular weight of 100 g/mol. According to the equation above, 72.9 g of hydrochloric acid may dissolve 100 g of calcium carbonate.

x = (4.1 g HCl)(100 g CaCO3 / 72.9 HCl)

x = 5.62 g.

To know more about  balanced equation visit:

brainly.com/question/7181548

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5 0
1 year ago
100 POINTS 100 POINTS 100 POINTS 100 POINTS 100 POINTS 100 POINTS 100 POINTS 100 POINTS 100 POINTS 100 POINTS 100 POINTS 100 POI
pantera1 [17]

Answer:

2.2 moles

Explanation:

n = CV

n = 0.4×5.50

n=2.2 moles

5 0
2 years ago
Read 2 more answers
A high level of ________________ in your urine could show that you have diabetes.
Ksenya-84 [330]

Answer:

<em>ketones.</em>

Explanation:

If you have a high level of ketones in your urine, it usually means you're not getting enough insulin, which is a sign of Diabetes.

<em><u>(I got this Information from the "Ketones in Urine" article from MedlinePlus.)</u></em>

7 0
3 years ago
How does salt alter the boiling point and freezing point of water
masha68 [24]

Answer:

adding salt is like adding an impurity therefore the boiling point might increase from 100°c to maybe 102°c

8 0
3 years ago
What does the prefix trans-indicate?
kogti [31]

Answer: I think trans- prefix Definition of trans- (Entry 3 of 3) 1 : on or to the other side of : across : beyond transatlantic. 2a : beyond (a specified chemical element) in the periodic table transuranium

Explanation:

The prefix trans- and its variant tra-, which mean “across,” appear in many English vocabulary words, for example: transmit, transform, and trajectory. Consider the word translation, which is the carrying “across” from one language into another.

Hope it helps

5 0
3 years ago
Read 2 more answers
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