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lisabon 2012 [21]
3 years ago
6

Which one help! Chemistry

Chemistry
1 answer:
vekshin13 years ago
6 0
Nitrogen gained three electrons

An atom that gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion.
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When the valve between the two containers is opened and the gases allowed to mix, how does the volume occupied by the n2 gas cha
schepotkina [342]
Missing question: 
Nitrogen: <span>2.0 L; </span>1.0 atm; 25°<span>C.
Oxygen: 3</span>.0 L; 2.0 atm; 25°C.
<span>When the valve between the two containers is opened, nitrogen gas moves from one container to another container and gases are mixed together, total volume of nitrogen is than:
V(nitrogen) = 2,0 L + 3,0 L = 5,0 L.</span>
4 0
3 years ago
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A block of wood has the mass of 180 grams.it is 10 cm long,6 cm wide and 4 cm thick.what is it’s density?
DochEvi [55]

Answer:

0.75 g/cm³

Explanation:

Given data:

Mass of wooden block =  180 g

Length of block = 10 cm

Width of block = 6 cm

Height or thickness = 4 cm

Density of block = ?

Solution:

Volume of block = height × length × width

Volume of block = 4 cm × 10 cm× 6 cm

Volume of block = 240 cm³

Density of block:

density = mass/ volume

d = 180 g/ 240 cm³

d = 0.75 g/cm³

4 0
3 years ago
A person weighs a different amount on other surfaces in space than they do on Earth because the gravitational pull of each surfa
Masja [62]

Answer:

A. The person weighs 56 pounds more on Mars than on the moon

Explanation:

7 0
3 years ago
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When you transferred the hot metal from the boiling water and into the calorimeter (coffee cup), if the thermometer touched the
sergey [27]

When you transferred the hot metal from the boiling water and into the calorimeter,  The effect will be

  • Change in temp is positive
  • Temp of metal V, dT=-ve
  • No change occurs in the specific heat of metal

This is further explained below.

<h3>What is the Specific heat of the metal?</h3>

a )Since the metal of the cup is hot and the water inside is cold, the water's temperature will rise as heat is transferred from the metal to the liquid.

Change in temp is positive

b)

Due to (a), heat is lost from the food to the water in the cup, lowering the metal's temperature.

Temp of metal V, dT=-ve

c)

No change occurs in the specific heat of metal because of its constant property.

Read more about Temperature

brainly.com/question/13439286

#SPJ1

7 0
2 years ago
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What are some examples of properties scientists use to describe matter?
AveGali [126]

Answer:

Physical properties are used to observe and describe matter. Physical properties can be observed or measured without changing the composition of matter. These are properties such as mass, weight, volume, and density.

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2 years ago
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