A baker touches a pie right after taking it out of the oven. Which statement best explains why the pie feels hot?

Answers

Answer 1

Answer: The pie is going to be hot right when it comes out of the oven because the oven uses air to transfer heat. The air warms at the bottom of the oven and the air rises to the top of the oven where your food is. This is why any food is going to be hot right after you take it out of an oven.

Answer 2

Answer:

Answer:

Molecules in the pie move faster than molecules in the skin, so heat is transferred to the skin.

Explanation:

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According to Table F, which compound is soluble in water?(1) barium phosphate (3) silver iodide
(2) calcium sulfate (4) sodium perchlorate

Answers

The answer is (4). All compounds of sodium and of perchlorate are soluble in water.

Answer: 4 sodium perchlorate

Explanation:

An igneous rock originally has 3 grams of uranium 238 in it. When dated the rock only contains 1.8 grams. What are the parent and daughter concentrations (in percentages) and what is its age?

Answers

Answer :

The parent and daughter concentrations (in percentages) is, 60 % and 40 % respectively.

The age of rock is $3.32* 10^9\text{ years}$

Explanation :

First we have to calculate the parent and daughter concentrations (in percentages).

$\text{Parent concentrations}=(1.8g)/(3g)* 100=60\%$

and,

$\text{Daughter concentrations}=((3-1.8)g)/(3g)* 100=40\%$

As we know that, the half-life of uranium-238 = $4.5* 10^9$ years

Now we have to calculate the rate constant, we use the formula :

$k=(0.693)/(t_(1/2))$

$k=\frac{0.693}{4.5* 10^9\text{ years}}$

$k=1.54* 10^(-10)\text{ years}^(-1)$

Now we have to calculate the time passed.

Expression for rate law for first order kinetics is given by:

$t=(2.303)/(k)\log(a)/(a-x)$

where,

k = rate constant = $1.54* 10^(-10)\text{ years}^(-1)$

t = time passed by the sample = ?

a = initial amount of the reactant = 3 g

a - x = amount left after decay process = 1.8 g

Now put all the given values in above equation, we get

$t=(2.303)/(1.54* 10^(-10))\log(3)/(1.8)$

$t=3.32* 10^9\text{ years}$

Therefore, the age of rock is $3.32* 10^9\text{ years}$

Transferring or sharing electrons between atoms forms

Answers

It forms something called a bond.

Explain What Conservation Is And Give Two Examples Of How You Can Conserve Water .

Answers

>Conservation is, preservation, protection, or restoration of the natural environment, natural ecosystems, vegetation, and wildlife

>Two examples are;

* turn off the water from the bathroom thing the sink while brushing your teeth or something

* If you don't drink all your water from the water bottle use it to water a plant or something ✌

Answer:

Conservation is using a resource wisely so it will not be used up. Possible examples include: take shorter showers; fill the bathtub only halfway; do not run water while scrubbing vegetables or brushing teeth; water lawns early in the morning or late in the afternoon; and run the washing machine only for a full load.

Explanation:

An Arrhenius base yields which ion as the only negative ion in an aqueous solution

Answers

The answer is most likely hydroxide.

What is special about nitrogen?
and what is it main function?

Answers

Nitrogen is present in many spheres of the Earth, including the atmosphere and biosphere. Nitrogen makes up around 80% of the atmosphere (more than oxygen), and exists as a diatomic molecule. it's also essential in the function of plants, as the most commonly used mineral nutrient. It is also used in photosynthesis and is a major component of amino acids which make protein.

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The change in heat energy for a reaction is best expressed as a change in a. Enthalpy (H) b. Absolute temperature (T) c. Specific heat (c) d. Entropy (S) e. Kinetic energy (KE)

HELP DUE TOMMOROW! FAILING CLASS!!! When it would be appropriate to use Radiocarbon dating, Rubidium-Strontium dating, Uranium-Lead dating, and Potassium-Argon dating. Include if the types of dating are used for organic or inorganic things and the time range they are useful for.