An ongoing series of fission reactions is called an

Answers

Answer 1

Answer: A chain of reaction (can easily get out of control)

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Pedro is baking a cake for his experiment on chemical changes. He knows a chemical change will occur when he puts the cake mixture in the oven. He would like to know what will happen when the cake is removed from the oven. What prediction would you make for Pedro's experiment? A. The chemical changes occurred because the chemicals changed. B. The chemical changes occurred because there was a change in light energy. C. The fruit and the hamburgers were affected by an increase in heat energy. D.The fruit and the hamburgers were affected by a decrease in heat energy.

The molar mass of copper(II) chloride (CuCl2) is 134.45 g/mol. How many formula units of CuCl2 are present in 17.6 g of CuCl2? 7.88 × 1022 formula units 1.84 × 1023 formula units 1.91 × 1023 formula units 1.42 × 1024 formula units

Answers

7.88 10^22 formula units

The answer is,

A. 7.88 × 1022 formula units

A heterogeneous mixture is one in which substances are evenly distributed and have a uniform composition

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If you’re asking if this is true or false, it is false . A HOMOGENEOUS mixture is one the where the substances are evenly distributed and have a uniform composition, while a HETEROGENEOUS mixture is uneven and the substances are part from each like oil and water.

The melting points of canola oil, corn oil, sunflower oil, and peanut oil are 10°C, –11°C, –17°C, and –2°C. If you cool a mixture of these oils to 5°C, which one can you separate easily?

Answers

You can separate out the canola oil easily, because it has cooled down enough to turn back into a solid.

An element X has two isotopes. X–15 has 7 protons and 8 neutrons. Determine the atomic number and mass number of the second isotope, which has 10 neutrons in its nucleus.. How would I do this and get the answer?

Answers

Answer:The atomic mass of the second isotope of an element X 17 amu with atomic number of 7 and it is represented by X-17.

Explanation:

Number of protons in isotope X-15,(p) = 7

Number of neutrons in isotope X-15,(n) = 8

Atomic mass of the isotope X-15 = (p) + (n) = 7 + 8 = 15 amu

Number of protons in second isotope of an element X,(p) = 7

Atomic number = Number of protons in an atom of an element

Number of protons in the isotopes of same element remains the same

Number of neutrons in second isotope of an element X,(n) = 10

Atomic mass of the second isotope of an element X= (p) + (n) = 7 + 10= 17 amu

The atomic mass of the second isotope of an element X 17 amu with atomic number of 7 and it is represented by X-17.

Why aliminium is use in manufacturing aeroplanes

Answers

Answer: Aluminum is ideal for aircraft manufacture because it's lightweight and strong.

Explanation:

Which of these is an appropriate instrument to measure mass?balance
scale
ruler
graduated cylinder

Answers

Answer: Balance

Explanation:

Answer:

balance

Explanation:

because

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When a 1.0 M solution of HCl is titrated with a 1.0 M solution of KOH, which is the approximate pH at the equivalent point?

The bright-red color of highway safety flares comes from strontium ions in salts such as Sr(NO3)2 and SrCO3. Burning a flare produces strontium ions in excited states, which then emit red photons at 606 nm and several wavelengths between 636 and 688 nm. Calculate the energy (in Joules per mole) of the 649 nm emission.

The major argument of opponents of the 1919Treaty of Versailles was that the treaty wouldrequire the United States to(1) become involved in future internationalconflicts(2) pay for war damages(3) adopt a policy of military alliances(4) keep troops permanently in Europe

Tectonic plates make up which of the following layers of the Earth?