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4 years ago

What compound name belongs in box (1) in Figure 3?

Physics

2 answers:

faltersainse [42]4 years ago

7 0

The compound name for box 1 should be sodium chloride.
The type of bond for box 3 should be covalent.

kodGreya [7K]4 years ago

5 0

The compound name which belongs to box[1] is known as Sodium chloride.

It is the common salt.

Before going to answer the second question, first we have to understand ionic and covalent bond.

The ionic bond is formed between electropositive metal and electronegative non metal. In this type of bond,the electropositive metal will lose electrons and forms cation where electronegative element will accpert electrons to form anion.The cations and anions are attracted to each other to form a compound.

The covalent bond is a type of bond in which sharing of electrons will occur to satisfy octet role which will result in the stability of the compound.

Hence the correct answer to the second question will be covalent.

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The final combined speed of the two trains is 3.4 m/s

Explanation:

We can solve this problem by using the law of conservation of momentum: in absence of external forces, the total momentum of the two trains must be conserved before and after the collision.

Therefore we can write:

$p_i = p_f\\m_1 u_1 + m_2 u_2 = (m_1+m_2)v$

where:

$m_1 = 3,825 kg$ is the mass of the first train

$u_1 = 0 m/s$ is the initial velocity of the first train, which is at rest

$m_2 = 5,169 kg$ is the mass of the second train

$u_2 = 6 m/s$ is the initial velocity of the second train

$v$ is the final combined velocity of the two trains after the collision

We can now solve the equation for v, to find the final combined velocity of the two trains:

$v=\frac{m_1 u_1 + m_2 u_2}{m_1+m_2}=\frac{0+(5169)(6)}{3825+5169}=3.4 m/s$

So, the final combined speed is 3.4 m/s.

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3 years ago

Circle the anomalous result in the table below. An anomaly is a piece of data that doesn't

alexandr1967 [171]

Answer:

Explanation:

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1 year ago

A sample contains 20 kg of radioactive material. The decay constant of the material is 0.179 per second. If the amount of time t

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Answer:

Explanation:

Given

N0 = 20kg (original substance)

decay constant λ = 0.179/sec

time t = 300s

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Using the formula;

n(t) = N0e^-λt

Substitute the given values

N(t) = 20e^-(0.179)(300)

N(t) = 20e^(-53.7)

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N(t) =143.055

To know how much of the original material that is active, we will find N(t)/N0 = 143.055/20 = 7.152

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4 years ago

What are some indicators that a chemical reaction is occurring? Check all that apply.

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The formation of bubbles, a change in color, and the formation of a precipitate (1, 3, & 5) are all indicators that a chemical reaction is occurring.

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3 years ago

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