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lara31 [8.8K]
2 years ago
12

Alisha organizes her data about the element lead into a table.

Chemistry
2 answers:
Simora [160]2 years ago
7 0

Answer:

The answer is C.

Explanation:

artcher [175]2 years ago
6 0

Answer:

Solid at room temperature.

Explanation:

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You use a 15.0 gram piece of aluminum foil to cover a pan in the oven. The specific heat for aluminum is c = 0.900 J/g o C. If t
SVEN [57.7K]

Answer:

Best regards.

Explanation:

Hello,

In this case, we relate the heat, mass, heat capacity and temperature when a thermal change is carried out as shown below:

Q=mCp(T_{final}-T_{initial})

Now, for the given data, we compute the absorbed heat (due to the temperature increase) as follows:

Q=15.0g*0.900\frac{J}{g^oC}*(350^oC-25^oC) \\\\Q=4.39x10^3J=4.39kJ

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8 0
2 years ago
Read 2 more answers
Question 2 (2 points)
inysia [295]

Answer:

v = 46.5 m/s

Explanation:

Given data:

Mass of car = 1210 kg

Momentum of car = 56250 kg m/s

Velocity of car = ?

Solution:

Formula:

p = mv

p = momentum

m = mass

v = velocity

Now we will put values in formula:

56250 kg m/s  = 1210 kg × v

v = 56250 kg m/s / 1210 kg

v = 46.5 m/s

So a car having mass of 1210 kg with momentum 56250 kg m/s having 46.5 m/s velocity.

5 0
3 years ago
How many moles of copper (Cu) are in 65.8 g Cu?
Veseljchak [2.6K]
<h2><u>Answer:</u></h2>

The correct answer is A) 1.04 mol Cu

{65.8 g     /   63.55 g/mol}

= 1.04 mol Cu

Explanation:

In  63.55  g  of copper metal there are  1 m o l  of  C u  atoms. By dividing the mass of Cu and molar mass, we can easily get the number of moles.


5 0
3 years ago
Read 2 more answers
Why do vehicle engines produce nitrogen oxides<br>​
Monica [59]

Answer:

When fuels are burned in vehicle engines, high temperatures are reached. At these high temperatures, nitrogen and oxygen from the air combine to produce nitrogen monoxide. When this nitrogen monoxide is released from vehicle exhaust systems, it combines with oxygen in the air to form nitrogen dioxide.

Explanation:

<h2>please mark me as brainlist please</h2>
5 0
2 years ago
Read 2 more answers
A
Aleksandr [31]

Answer:

D. Using a battery

3 0
3 years ago
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