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Harlamova29_29 [7]
3 years ago
6

Group 2 in the periodic table contains the elements beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), a

nd radium (ra). what characteristic do these elements share?
Chemistry
1 answer:
Artist 52 [7]3 years ago
6 0
Lose 2 electron to form 2+
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How many grams of aluminum chloride must decompose to produce 78.3 milliliters of aluminum metal, if the density of aluminum is
Vilka [71]
1mol aluminium chloride gives 1mol aluminium and 3mol chloride
density equals mass divided by volume
d=m/v
m=v*d
=78.3*2.7
=211.41grams
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3 years ago
What is the main function of the cytoplasm
krok68 [10]
Function of Cytoplasm. The jelly-like fluid that fills a cell is called cytoplasm. It is made up of mostlywater and salt. Cytoplasm is present within the cell membrane of all celltypes and contains all organelles andcell parts.
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3 years ago
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Como clasificarias la máquina de la siguiente ilustración? tijera​
Lina20 [59]

Answer:

<u><em></em></u>

  • <u><em>máquina simple: palanca</em></u>

Explanation:

En vista de que  la pregunta está realizada en español, la respuesta la doy en el mismo lenguage.

La<em> palanca</em> es una máquina simple que consiste en una barra rígida que puede girar alrededor the un punto the pivote.

La forma en que functiona una palanca es que se aplica la ferza en el extremo de la barra que está más alejado del pivote. Este extremo puede desplazarse una larga distancia o arco, con una fuerza pequeña, haciendo que los puntos que están al otro lado del pivote, a una menor distancia de este, se desplacen una distancia o arco menor pero con más fuerza que la aplicada.

6 0
3 years ago
you are investigating an organic compound. you discover the following: it contains no hydrogen atoms. what property do you expec
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This can be, for example, halogensubstituted hydrocarbons.
CCl₄, C₂F₆.

Or halides halocarboxylic acids, and other compounds.
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If 60.2 grams of hg combines completely with 24.0 grams of br to form a compound what is the percent
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Answer is: the percent composition of Hg in the compound is 71.5%.

Balanced chemical reaction: Hg + Br₂ → HgBr₂.

m(Hg) = 60.2 g; mass of the mercury.

m(Br₂) = 24.0; mass of the bromine.

m(HgBr₂) = m(Hg) + m(Br₂).

m(HgBr₂) = 60.2 g + 24 g.

m(HgBr₂) = 84.2 g; mass of the compound.

ω(Hg) = m(Hg) ÷ m(HgBr₂) · 100%.

ω(Hg) = 60.2 g ÷ 84.2 g · 100%.

ω(Hg) = 71.5%.

6 0
3 years ago
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