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aksik [14]
3 years ago
14

Select all that apply.

Chemistry
1 answer:
yuradex [85]3 years ago
8 0

Answer:

1;2;3

Explanation:

because a consumer is a person that creates and gets stuff

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Magnesium metal is added to excess acid to generate hydrogen gas, which is collected over water at 25.0°C (vapour pressure of wa
pentagon [3]

Answer:

Explanation:

PV / RT =  n , n is number of moles

Total pressure  = 96400 Pa

vapour pressure = 23.8 mm of Hg

= .0238 x 13.6 x 10³ x 10 Pa = 3236.8 Pa

Pressure of hydrogen gas P = 96400 - 3236.8

= 93163.2 Pa

n = 93163.2 x .0251 / 8.31 x 298

= .944 moles of hydrogen gas is produced

moles of magnesium reacted = .944

grams of magnesium reacted = .944 x 24 = 22.66 grams .

7 0
3 years ago
The direction towards the headwaters of a stream is called? A. tributary B. headwater C.downstream D. upstream
Lynna [10]

Answer:

Option (D)

Explanation:

A stream is a narrow river that originates from a source area. These source areas are usually the high altitude mountains in which the high amount of snow is gathered in the winter season and subsequently melts during the summer season. As a result of which the streams and rivers flows and mix up with the seas and oceans. These source areas are commonly termed as the headwaters or the stream head.

The direction towards the headwaters of a stream or moving against the flow direction is generally known as the upstream direction.

Hence, the correct answer is option (D).

4 0
4 years ago
If I initially have a gas at a pressure of 12 kPa, a volume of 23 liters, and a temperature of 200 K, and then I raise the press
sertanlavr [38]

Answer:

The new volume of gas would be 30 L.

Explanation:

This is an example of a Combined Gas Laws problem.

5 0
3 years ago
Please help me with this questions, sorry:(
natulia [17]

Answer:

yes

Explanation:

the water may freeze at low winter temperatures but  it will still be there

8 0
3 years ago
The solution set of axequalsb is the set of all vectors of the form wequalspplusbold v subscript h​, where bold v subscript h is
ELEN [110]
Answer : Incorrect

Explanation : In the given solution set of Ax = b;
is set of all vectors to form w= p + V_{h}
here V_{h} is is any solution of the equation Ax = 0;

this stands to be incorrect, as the correct would only exists when some vector p is found to be like this Ap=b
3 0
4 years ago
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