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spin [16.1K]
4 years ago
5

A student prepares 150.0 mL of 1.40 M HCl using 35.0 mL of a stock solution. What is the concentration of the stock solution? Us

e M subscript i V subscript i equals M subscript f V subscript f..

Chemistry
1 answer:
drek231 [11]4 years ago
3 0

Answer:6.0M

Explanation:see attached photo

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Two copper electrodes dipped in copper sulphate solution are connected to the end of the battery marked with a ''_'' is:
guajiro [1.7K]

Answer:

d) catión

Explanation:

8 0
3 years ago
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Cuando el oxígeno reacciona con el calcio produce un sólido blanco muy utilizado en la preparación de cementos. ¿Cuál de las sig
8_murik_8 [283]

Answer:

2Ca + O₂ → 2CaO

Explanation:

Cuando el Calcio (Ca) reacciona con oxígeno (O₂) se produce cal (CaO). La cal es un sólido inodoro de color blanco a grisáceo. La cal es un óxido que se encuentra presente en el cemento y su cuantificación permite determinar la calidad y el tipo de cemento a utilizar.

La reacción que describe el proceso anterior es:

Ca + O₂ → CaO

Para balancear los oxígenos, se deben poner 2 CaO como producto:

Ca + O₂ → 2CaO

Para balancear los calcios, se pone como coeficiente del Ca un 2:

<h3>2Ca + O₂ → 2CaO</h3><h3 />

Esta última es la reacción que describe el proceso anterior

6 0
3 years ago
What functional group consists of a carbon atom double-bonded to an oxygen atom?
DaniilM [7]

Answer:

The answer to your question is: letter B.

Explanation:

Carbon atom double-bonded to an oxygen atom    C= O,

a) Carbohydrate group   this group does not exist

b)Carbonyl group  This option is right, carbonyl group is C=O

c) Hydroxyl group  This option is incorrect, hydroxyl group is OH, very different from C=O

d) Ketone group Ketone group does not exist, ketones have the same functional group as aldehydes (C=O)

7 0
4 years ago
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_______ is how strongly gravity pulls on an object
oksano4ka [1.4K]
FORCE is how strongly gravity pulls on an object

MASS measures how much space matter takes up

Hope that helped! Good luck!
4 0
3 years ago
Do u have a name or can i call u mine, notice how i put chemistry :) <br><br> jk jk
Olin [163]

Answer:

lol very equisite joke

Explanation:

6 0
3 years ago
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