All categories

2 years ago

what is the specific heat of a substance if 1560 cal are required to raise the temperature of a 312-g sample by 15°C

Chemistry

1 answer:

jasenka [17]2 years ago

7 0

Answer:

0.33 cal⋅g-1°C-1

Explanation:

The amount of heat required is determined from the formula:

q= mcΔT

To see more:

https://api-project-1022638073839.appspot.com/questions/what-is-the-specific-heat-of-a-substance-if-1560-cal-are-required-to-raise-the-t#235434

You might be interested in

I need help!! Following measurements

Anna71 [15]

I am so sorry I do not know but I need to answer a question in order to ask one I hope u pass:))

5 0

2 years ago

A watershed is the land that water flows across or through on its way to a stream, lake, wetland, or other body of water. What i

horsena [70]

D. level of the water table

hope its helps

<span>"too much water can cause raging floods and flush pollutants and soil into rivers and streams"
</span>the statement i got the answer from

7 0

2 years ago

One mole of a metallic oxide reacts with one mole of hydrogen to produce two moles of the pure metal

kenny6666 [7]

Answer:

Lithium oxide, Li₂O.

Explanation:

Hello!

In this case, according to the given amounts, it is possible to write down the chemical reaction as shown below:

$M_2O+H_2\rightarrow 2M+H_2O$

Which means that the metallic oxide has the following formula: M₂O. Next, we can set up the following proportional factors according to the chemical reaction:

$5.00gM_2O*\frac{1molM_2O}{(2*X+16)gM_2O}*\frac{2molM}{1molM_2O}*\frac{XgM}{1molM}=2.32gM$

Thus, we perform the operations in order to obtain:

$\frac{10X}{(2X+16)}=2.32$

So we solve for x as shown below:

$10X=2.32(2X+16)\\\\10X=4.64X+37.12\\\\X=\frac{37.12}{10-4.64}\\\\X= 6.93g/mol$

Whose molar mass corresponds to lithium, and therefore, the metallic oxide is lithium oxide, Li₂O.

Best regards!

8 0

2 years ago

(01.05 LC)

wel

Answer:

it is A trust me I know thank you

7 0

1 year ago

Read 2 more answers

According to the law of conservation of matter, which statement about chemical reactions is true?

Zolol [24]

The law of conservation of matter basically states that matter can’t be created or destroyed, only changed in form, so you can rule out any option that mentions destroying or creating matter. That leaves only option A. Atoms cannot be created or destroyed by chemical reactions.

4 0

2 years ago