What is the volume of 4.5 moles of H2 at STP?

Answers

Answer 1

Answer: 1.0 mole ---------- 22.4 at STP
4.5 moles --------- ?

4.5 * 22.4 / 1.0

= 100.8 L of H₂

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In a chemical reaction, substance R reacts with compound XY to produce 47.0 g of compound RX. If the theoretical yield of RX is 56.0 g, what is its percent yield?

use the reaction that occours when magnesium burns in oxygen to show how a reaction might be included in more than one category of reaction

Answers

2Mg+O₂⇒2MgO
It can be a combustion reaction, or it can be a combination reaction

Oil flows upward in the wick of a lantern because of the liquid property calledA. density.
B. meniscusity.
C. viscosity.
D. capillarity.

Answers

B
Meniscusity the convex or concave upper surface of a column liquid, the curvature of which is caused by surface tension

Capillarity. Capillary action is what causes anything with a wick to work, think about when you stick the corner of a paper towel in water, the water soaks up the paper towel.

Which of these most likely causes a total solar eclipse?Select one:
a. the sun, moon at perigee, and Earth forming a triangle
b. the sun, moon at apogee, and Earth forming a triangle
c. the new moon at apogee coming between Earth and the sun along a straight line
d. the new moon at perigee coming between Earth and the sun along a straight line

Answers

Answer:

d. the new moon at perigee coming between Earth and the sun along a straight line

Explanation:

Solar eclipse occurs when moon comes in between sun and Earth and the three align in a straight line. The moon blocks the sunlight falling on the earth. The earth passes through the shadow of the moon.This phase of moon is New moon.

A total eclipse is said to occur when the disc of moon complete covers the disc of sun. This happens when moon is at closest position to earth in it orbit that is at perigee.

A camcorder has a power rating of 16 watts. If the output voltage from its battery is 8 volts, what current does it use?

Answers

The equation for power is,

Power $P = I * V$

Where P is power is Watts

I is current in Amperes

V is voltage in volts

Given, power of the camcorder = 16 Watts

Output voltage from its battery = 8 Volts

Calculating the current in Amperes from power and voltage,

$P = I * V$

$16 Watts = I * 8 Volts$

$I =(P)/(V)$

I = $(16 W)/(8 V)$

= 2 A

Therefore the current used will be 2 A.

Power is defined as product of current multiplying voltage, that is

P=I×V

Here, P is the power,

I is the current

While V is the voltage

Here,

P is 16 watt

V is 8 volt

I is the current, that needs to be determined,

Putting the values in the equation

16=I× 8

$I=(16)/(8)$

I=2

So, When a camcorder has a power rating of 16 watts. If the output voltage from its battery is 8 volts, what current is 2 A

1a. Identify the chemical_____ comes from the breakdown of proteins.

Answers

is it amino acids???????

17. What standard reduction electrode has a half-cell potential of 0.00 V? Oxygen hydrogen
lithium
Fluorine

Answers

I believe Hydrogen is the standard reduction electrode that has a half-cell potential of 0.00 V. In electrochemical cell, an electric potential is created between two dissimilar metals. This potential is a measure of the energy per unit charge which is available from reduction or oxidation reactions to drive the reaction.

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