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3 years ago

The order of elements in the periodic table is based on the atomic number.

Chemistry

1 answer:

Gnoma [55]3 years ago

3 0

Yes it is for example look at Iodine and Tellurium.
Hope this helps :).

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The specific heat of iron is 0.46 J/g°C. How many joules will it take to make the temperature of a 150. g bar go up from 25°C to

leva [86]

Answer:

Q = 2.415kj

Explanation:

Q = Mc∆temperature

c = 0.46j/g°c = 0.46kj/kg°c

mass = 150g = 0.15kg

∆temperature = 60 - 25 = 35°c

Q = 0.15 X 0.46 X 35 = 2.415kj

Q = 2.415kj

7 0

3 years ago

If 765 mL of a gas at 2.78 atm, has the volume Change to 2.47 L , What is the pressure of the

vampirchik [111]

Answer:

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the new pressure

$P_2 = \frac{P_1V_1}{V_2} \\$

From the question

2.47 L = 2470 mL

We have

$P_2 = \frac{765 \times 2.78}{2470} = \frac{2142}{2470} \\ = 0.867206...$

We have the final answer as

Hope this helps you

3 0

3 years ago

In your own words, summarize the steps you took to complete the lab. Explain what the test (independent) variable was, and what

alexira [117]

We can’t answer this question without any information. There is no explanation of the lab, nor is there any data.

5 0

4 years ago

What is white light?

muminat

White light is what the eye sees when wavelengths of all colours reach the eye.

It is a combination of Red, Blue and Green wavelengths of light, that is perceived as white.

6 0

4 years ago

Read 2 more answers

You are on the Titanic and want to find something that will float because you didn't

damaskus [11]

Find volume of pillow

L=78cm

B=55cm

H=25cm

$\\ \bull\tt\longrightarrow V=LBH$

$\\ \bull\tt\longrightarrow V=25(78)(55)$

$\\ \bull\tt\longrightarrow V=107250cm^3$

$\\ \bull\tt\longrightarrow V=10.72m^3$

Now

Mass=5.5kg

$\\ \bull\tt\longrightarrow Density=\dfrac{Mass}{Volume}$

$\\ \bull\tt\longrightarrow Density=\dfrac{5.5}{10.72}$

$\\ \bull\tt\longrightarrow Density=0.5kg/m^3$

Density of water=1000kg/m^3

As it is less than density of water it will float on water

8 0

3 years ago