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Leokris [45]
3 years ago
9

4. Biowing a balloon is a physical and reversible change. When the balloon bursts, it is also a

Chemistry
1 answer:
rosijanka [135]3 years ago
6 0

Answer: blowing a balloon is a physical change as when you blow a balloon the balloon expands but the balloon remains a balloon .there is change in Blowing a balloon is a physical change because only the size of the balloon changes , no change in chemical properties of the balloon occurs (no new substance is formed).

Explanation:

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______collisions describe the process by which particles collide and transfer energy without loss of energy.
Elina [12.6K]

Answer:

A. Elastic

Explanation:

an elastic collision is one which there is no overall loss of kinetic energy

5 0
3 years ago
How does the difference in electronegativity values determine the type of bond that occurred? Ionic or covalent
Alenkasestr [34]
The more electronegativity atom attracts electrons more strongly and gains a slightly negative charge, the less electronegative atom has a slightly positive charge.
8 0
4 years ago
An initial mixture of nitrogen gas and hydrogen gas is reacted in a rigid container at a certain temperature by the reaction At
anygoal [31]

Answer: [N2]₀ = 10M and [H2]₀ = 11M

Explanation: To calculate the initial concentration, you would have to set up an ICE table, which is an organized way of tracking known quantities or the ones you want to find. ICE stands for:

I is initial amount;

C is change in concentration;

E is for equilibrium concentration;

For the mixture,

       N2                       3H2                2NH3

I      [N2]₀                     [H2]₀                  0

C     - x                          -3x                 +2x

E     [N2]₀ - x =8      [H2]₀ - 3x =5       2x =4

With the product, we can find "x":

2x=4

x=2M

With x=2, find the concentrations:

[N2]₀ - x = 8

[N2]₀ = 10M

[H2]₀ - 3x = 5

[H2]₀ = 11M

The initial concentrations of nitrogen gas [N2] is 10.0 M and of hydrogen gas [H2] is 11.0 M.

8 0
3 years ago
Read 2 more answers
100.0 g of water was placed in a simple, constant-pressure calorimeter. The temperature of the water was recorded as 295.0 K. A
Marizza181 [45]

Answer:

296.05\ \text{K}

Explanation:

m_w = Mass of water = 100 g

c_w = Specific heat of water = 4.184\ \text{J/g K}

m_c = Mass of copper = 20 g

c_c = Specific heat of copper = 0.385\ \text{J/g K}

\Delta T_w = Temperature change in water = (T-295)

\Delta T_c = Temperature change in cooper = (353-T)

T = Final temperature of the system

The heat balance of the system is given by

m_wc_w\Delta T_w=m_cc_c\Delta T_c\\\Rightarrow 100\times 4.184\times (T-295)=20\times 0.385\times (353-T)\\\Rightarrow 418400\left(T-295\right)=7700\left(353-T\right)\\\Rightarrow 418400T-123428000=2718100-7700T\\\Rightarrow T=\frac{1261461}{4261}\\\Rightarrow T=296.05\ \text{K}

The final temperature of the water is 296.05\ \text{K}.

7 0
3 years ago
Match the measurement with the correct number of significant digits:
alina1380 [7]
What are you measuring
5 0
4 years ago
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