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ivolga24 [154]
1 year ago
14

A roast was cooked at 325 °F in the oven for 4 hours. The internal temperature rose from 32 °F to 145 °F.What was the average ri

se in temperature per hour?
Chemistry
1 answer:
andriy [413]1 year ago
7 0

Answer:

28.25 F per hour

Explanation:

It has a rather very easy solution. First find the temperature difference between the the initial and final internal temperatures which is 145 - 32 = 113 F. The time span is about 4 hours, divide 113 F by 4 , which is 28.25 F per hour.

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A titration is performed to determine the amount of sulfuric acid, H2SO4, in a 6.5 mL sample taken from car battery. About 50 mL
Orlov [11]

Answer: The molar concentration of sulfuric acid in the original sample is 1.943 M

Explanation:

To calculate the molarity of acid, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is H_2SO_4

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is NaOH.

We are given:

n_1=2\\M_1=?\\V_1=56.5mL\\n_2=1\\M_2=0.5824M\\V_2=43.37mL

Putting values in above equation, we get:

2\times M_1\times 56.5=1\times 0.5824\times 43.37

M_1=0.2235

Now to calculate the molarity of original solution:

M_1\times 6.5=0.2235\times 56.5

M_1=1.943

Thus the molar concentration of sulfuric acid in the original sample is 1.943 M

5 0
2 years ago
How quickly can bacterial contamination occur?
NeX [460]
5-10 seconds xxx :) hope this helps
5 0
2 years ago
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A crystal of graphite contains which type of bond?
cupoosta [38]

Answer:Graphite has a giant covalent structure in which: each carbon atom is joined to three other carbon atoms by covalent bonds.

4 0
1 year ago
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Calculate the number of grams of xenon in 4.658 g of the compound xenon tetrafluoride.
andrezito [222]

Answer:

The mass of xenon in the compound is 2.950 grams

Explanation:

Step 1: Data given

Mass of XeF4 = 4.658 grams

Molar mass of XeF4 = 207.28 g/mol

Step 2: Calculate moles of XeF4

Moles XeF4 = mass XeF4 / molar mass XeF4

Moles XeF4 = 4.658 grams / 207.28 g/mol

Moles XeF4 = 0.02247 moles

Step 3: Calculate moles of xenon

XeF4 → Xe + 4F-

For 1 mol xenon tetrafluoride, we have 1 mol of xenon

For 0.02247 moles XeF4 we have 0.02247 moles Xe

Step 4: Calculate mass of xenon

Mass xenon = moles xenon * molar mass xenon

Mass xenon = 0.02247 moles * 131.29 g/mol

Mass xenon = 2.950 grams

The mass of xenon in the compound is 2.950 grams

5 0
2 years ago
Suggest why sodium and hydrogen ions do not diffuse at the same rate
Troyanec [42]

Answer:

sodium has got ionic bonds that are weak

compared to hydrogen covalent bonds that are strong

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