3 years ago

Energy is conserved in chemical reactions. It is neither created nor_____

Chemistry

1 answer:

aivan3 [116]3 years ago

6 0

Answer:

destroyed, from, endothermic

Explanation:

Energy is conserved in chemical reactions. It is neither created nor destroyed but can be transferred from one form to another.

An exothermic reaction transfers energy from the reacting substance to the surroundings. The body of the container feels warm. An exothermic reaction has a negative value of enthalpy.

An endothermic reaction transfers energy from the surroundings to the reacting substance. The body of the container feels cold. In an endothermic reaction, enthalpy is positive.

You might be interested in

Which formula is a molecular compound? H2O2 CaO MgS NaCl

Alborosie

Answer:

H2O2

Explanation:

8 0

3 years ago

Read 2 more answers

The hot dogs you ate at the barbecue last week were 75% fat-free by weight, had 275 calories, and weighed 110 g. a) What percent

vovangra [49]

Answer:

a) 25%

b) 27.5 g

c) 90%

Explanation:

a) 75% fat-free by weight means 25% of the weight is made by fat.

b) 110 g ___ 100%

x ___ 25%

x = 27.5g

Each hot dog has 27.5g of fat.

c) 9 cal ___ 1 g fat

y ___ 27.5 g fat

y = 247.5 cal

275 cal ___ 100%

247.5 cal ___ z

z = 90%

90 % of the calories come from fat.

6 0

3 years ago

When bonds are (broken/formed) there is a positive energy change.

krek1111 [17]

Answer: Hello i am confused are you asking a question?

Explanation:

3 0

3 years ago

Read 2 more answers

If a gas occupies a volume of 6.6 L at 16.0 °C, at what temperature, in °C, will it occupy a volume of 8.9 L if the pressure rem

Pachacha [2.7K]

Answer:

Explanation:

5 0

3 years ago

If an object that stands 3 centimeters high is placed 12 centimeters in front of a plane mirror, how far from the mirror is the

ryzh [129]

Answer:

the mirror is 12 cm away from the image

Explanation:

; the image will be virtual and it will form at 12 cm distance behind the mirror.

7 0

3 years ago