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Alexeev081 [22]
4 years ago
14

Elements in the middle of the periodic table are called _____

Chemistry
1 answer:
frozen [14]4 years ago
3 0

Answer:

Transition metal

Explanation:

The elements in the middle are called Transition metal and the have similarity in the atomic structure resulting in similar properties, for example they are less reactive than the alcaline earth metals

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4.0 L sample of methane gas is collected at 30.0c,<br> what is the volume of the sample at -8c?
Vedmedyk [2.9K]
This particular law is a gas law, called Charle's Law. The formula is:

V1    V2
---- = ----
T1     T2

So we know our original volume is 4.0L, so we would plug that into our V1. We know T1 is the 30 degrees, since it relates to our original volume. However, we need to convert it to kelvin. We do this simply by adding 273 degrees to the 30 degrees, since 273 is the constant for kelvin.

We do not know our second volume, however we know out T2. It is -8 degrees, and don't forget to convert it to Kelvin. 

So, when we plug all of these numbers into the equation, we are left with V2 to find. To do this we cross multiply (V1 x T2) and then divide by T1. That leaves us with the number for V2. Don't forget to round to the least # of sig figs! And you can divide V1 by T1, and then divide V2 by T2, to ensure your answers are the same, since they are directly porportional and need to be equal to each other. 

Hope I could help!
8 0
4 years ago
You have 0.5 L of air at a pressure of 203 kPa and -70 degrees C in a rigid, sealed container. What is the absolute temperature
horrorfan [7]
2) 273k is your answer. You're welcome.
7 0
4 years ago
If you measure the mass of a sample of an unknown gas, and also measure the volume, pressure, and temperature, what identifying
love history [14]

Answer:

The molar mass of the gas

Explanation:

The ideal gas equation of state is:

PV = nRT

If we measure the volume (V), the pressure (P), and the temperature (T), we use the gas constant R (0.082 L.atm/K.mol) to calculate n (moles of gas):

n = PV/RT

Then, we can divide the mass into the number of moles to calculate the molar mass of the gas:

molar mass = mass/n

8 0
3 years ago
Select the most likely product for this reaction: upper a g upper n upper o subscript 3 (a q) plus upper n a upper o upper h (a
Mamont248 [21]

One of the most likely products for the reaction would be Ag_2O

<h3>Chemical reactions</h3>

The reaction between AgNO_3 and NaOH yields 3 products which are Ag_2O (a precipitate), NaNO_3, and H_2O as shown by the equation below:

2 AgNO_3 + 2 NaOH --- > Ag_2O + 2 NaNO_3 + H_2O

One of the products precipitates out of the solution to give the reaction a precipitation reaction look.

More on precipitation reaction can be found here: brainly.com/question/24158764

#SPJ4

5 0
2 years ago
Read 2 more answers
What in the world is the answers
S_A_V [24]
There is a website for this, when I was in 7th grade I had a paper that looked exactly like this, just look up the answers until you find a website for it.
5 0
3 years ago
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