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Anna35 [415]
3 years ago
13

ASAP NEED HELP, WILL MARK BRAINLEST, WHEN ASKING A QUESTION I REPEAT DO NOT ASK IT IN THE ANSWER SECTION, THANKS FOR READING. (b

tw: You have to draw it, then take a picture or screenshot the answer as it cannot be answered via text)

Chemistry
2 answers:
kicyunya [14]3 years ago
7 0

Answer:

Look at the images/files below :) Hope it helps Have a great day!

Explanation:

elena-s [515]3 years ago
7 0

Answer:

Its F S E F Hope this helped :D

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Calcium is found in your bones. This is an example of a mineral being used for ________ purposes.
faltersainse [42]
 the answer is living 

3 0
3 years ago
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Calcule la molaridad de una solución acuosa de ácido sulfúrico (H₂SO₄) que se preparó al mezclar, en un recipiente aforado, 4 mo
oee [108]

Considerando la definición de molaridad, la molaridad de una solución acuosa de ácido sulfúrico (H₂SO₄) es 0.5 \frac{moles}{litro}.

La molaridad es una medida de la concentración de un soluto en una disolución que se define como el número de moles de soluto que están disueltos en un determinado volumen.

La molaridad de una solución se calcula dividiendo los moles del soluto por el volumen de la solución:

Molaridad=\frac{numero de moles de soluto}{volumen}

La Molaridad se expresa en las unidades \frac{moles}{litro}.

En este caso, sabes que una solución acuosa se preparó al mezclar 4 moles del ácido con suficiente agua hasta completar 8 litros de solución. Entonces, sabes que:

  • número de moles de soluto= 4 moles
  • volumen= 8 litros

Reemplazando en la definición de molaridad:

Molaridad=\frac{4 moles}{8 litros}

Resolviendo:

Molaridad= 0.5 \frac{moles}{litro}

Finalmente, la molaridad de una solución acuosa de ácido sulfúrico (H₂SO₄) es 0.5 \frac{moles}{litro}.

<em>Aprende más</em>:

  • brainly.com/question/17647411?referrer=searchResults
  • brainly.com/question/21276846?referrer=searchResults

8 0
3 years ago
What are the period and group trends in electronegativities
Leviafan [203]

Electronegativity of an element decreases as we move down a group on the periodic table and electronegativity increases while moving from left to right across a period on the periodic table.

Explanation:

  • The electronegativity increases as we move from left to right across a period because from left to right across a period, the nuclear charge is increasing Hence the attraction for the valence electrons also increases.
  • As we move down a group, the atoms of each element have an increasing number of energy levels. The distance between the nucleus and valence electron shell increases and reduces the attraction for valence electrons. Hence electronegativity decreases as we move from top to bottom down a group.
8 0
3 years ago
How many neutrons does the isotope N-14 have?
Ad libitum [116K]

Answer:

7

Explanation:

N-14 has 7

i looked it up ye ur probably gonna get it right

6 0
3 years ago
Where did the zebra mussels originally come from? Plz help
Travka [436]

Answer:

The zebra mussel is a fresh and brackish water bivalve mollusk. It feeds on plankton and suspended organic matter. It is listed 100 most damaging invasive alien species in the world of the International Union for Conservation of Nature

Zebra mussels are an invasive, fingernail-sized mollusk that is native to fresh waters in Eurasia. Their name comes from the dark, zig-zagged stripes on each shell. Zebra mussels probably arrived in the Great Lakes in the 1980s via ballast water that was discharged by large ships from Europe

Explanation:

hope this helps

3 0
3 years ago
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