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BlackZzzverrR [31]

2 years ago

9

1. Which of the following correctly represents a balance chemical equation? (a) NaCl + 2H2O → 2NaOH + 2Cl2 + H2 (b) 2NaCl+H2O →

2NaOH + 2Cl2 +H, (C) 2NaCl+2H,0 → 2NaOH +Cl2 +H, + (d) 2NaCl + 2H2O → NaOH + CO2 + H2

1 answer:

butalik [34]2 years ago

8 0

Answer:

thx sa points

Explanation:

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Natali5045456 [20]

Answer: Well i think i have saw this i wolud say B hope this helps

Explanation:

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2 years ago

1. A sample of gas has an initial volume of 25 L and an initial pressure of 123.5 kPa. If the pressure changes to

sveta [45]

Answer:

$\large \boxed{\text{17.mL}}$

Explanation:

The temperature and amount of gas are constant, so we can use Boyle’s Law.

$p_{1}V_{1} = p_{2}V_{2}$

Data:

$\begin{array}{rcrrcl}p_{1}& =& \text{123.5 kPa}\qquad & V_{1} &= & \text{25 L} \\p_{2}& =& \text{179.9 kPa}\qquad & V_{2} &= & ?\\\end{array}$

Calculations:

$\begin{array}{rcl}123.5 \times 25 & =& 179.9V_{2}\\3088 & = & 179.9V_{2}\\V_{2} & = &\dfrac{3088}{179.9}\\\\& = &\textbf{17 L}\\\end{array}\\\text{The new volume of the gas is } \large \boxed{\textbf{17 L}}$

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2 years ago

A logical conclusion based on observations is called an inference.

Roman55 [17]

ANSWER: True
EXPLANATION: An inference is a logical conclusion based on observations.

Hope it helps u!

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2 years ago

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Leni [432]

Answer:

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Explanation:

the number after the element is the amount of atoms there is

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2 years ago

Question is in the screen shot.

monitta

Answer:

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Explanation:

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2 years ago