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3 years ago

Question: Based on this information, which type of light is more likely to damage the material?

Chemistry

1 answer:

Helen [10]3 years ago

5 0

Answer: It will be D which is number 4........

Neither type of light is likely to damage the material, because the material does not take in energy from either the X-ray light or the gamma ray light.

Explanation:

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What's the difference between saturated and unsaturated fatty acids?

xz_007 [3.2K]

Saturated fats<span> are solid at room temperature, while </span>unsaturated fats<span> are liquid at room temperature. This is because </span>saturated and unsaturated fats<span> differ in their chemical structures. </span>Saturated fats<span> have no double bond </span>between<span> molecules, which means there are no gaps and the </span>fat<span> is </span>saturated<span> with hydrogen molecules.</span>

6 0

4 years ago

The change in enthalpy for the reaction A - P is x kJ/mol. What does the enthalpy change for the reaction P -A? (A) -x kJ/mol (B

nikdorinn [45]

Answer : The correct option is, (A) -x kJ/mol

Explanation :

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

The given chemical reaction is,

$A\rightarrow P$ $\Delta H=x\text{ kJ/mole}$

Now we have to determine the value of $\Delta H$ for the following reaction i.e,

$P\rightarrow A$ $\Delta H'=?$

According to the Hess’s law, if we reverse the reaction then the sign of $\Delta H$ change.

So, the value $\Delta H'$ for the reaction will be:

$\Delta H'=-(x\text{ kJ/mole})$

$\Delta H'=-x\text{ kJ/mole}$

Hence, the value of $\Delta H$ for the reaction is -x kJ/mole.

3 0

3 years ago

How can the atomic number and mass number be used to determine the amount of each subatomic particle present in an atom of a giv

Goshia [24]

Because of the environment that

4 0

4 years ago

Calculate the molar mass of Fe2(SO4)3. Then Calculate the mass of iron(III) sulfate of 4.05x10^23 formula units. Work must be sh

Talja [164]

Answer:

Molar mass: 399.9 g/mol

The mass of iron(III) sulfate is 269 grams.

Explanation:

First of all, you have to find the molar mass of Fe2(SO4)3.

So you find the molar first for each element

However, there are 2 iron atoms, 3 sulfur atoms, and 12 oxygen atoms.(Don't forget the 3 outside the parenthesis of SO4).

So you do this

So the final answer is 399.9 g/mol

Second of all, if you want to find the mass of Fe2(SO4)3, you have to convert from formula units to moles. After that, then you convert from moles to grams.

If you want to convert from molecules to molecules, you have to use Avogadro's number. Avogadro's number is 6.02 x 10^23. Then if you want to convert from moles to grams, you use the molar mass. We already know that the molar mass is 399.9 g/mol.

Therefore, now use dimensional analysis to show your work.

<h3>(4.05 x 10^23) formula units of Fe2(SO4)3 * 1 mol/ 6.02 x 10^23 formula units * 399.9 g/mol / mol</h3>

Formula units in the beginning and the moles will cancel out.

But we need to use significant figures with the least digits(which is 4.05) So we round to the nearest whole number.

So the final answer for the mass of iron(III) sulfate is 269 grams(don't forget the units).

Hope it helped!

5 0

3 years ago

Can you tell me the answer

Nesterboy [21]

Answer:

noo sorry

Explanation:

8 0

3 years ago

Read 2 more answers