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3 years ago

What is the first step in nuclear fission? 60 POINTS BRAINLIEST

Chemistry

1 answer:

kobusy [5.1K]3 years ago

5 0

Answer:

Energy is released. In the first step, a uranium-235 atom absorbs a neutron, and splits into two new atoms (fission fragments), releasing three new neutrons and a large amount of binding energy.

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A water balloon was dropped from a high window and struck is Target 1.1 seconds later if the balloon left the person's head at -

Amiraneli [1.4K]

The answer is -0.22 for the total impact of velocity 1.1 seconds -5.0=-

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4 years ago

Which change absorbs heat?

tekilochka [14]

Freezing water into ice

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3 years ago

Read 2 more answers

2. What is the mass of 5.3 moles of CaCl2?

Tanya [424]

Answer:

590 g CaCl₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis

Explanation:

Step 1: Define

5.3 mol CaCl₂

Step 2: Identify Conversions

Molar Mass of Ca - 40.08 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of CaCl₂ - 40.08 + 2(35.45) = 110.98 g/mol

Step 3: Convert

$5.3 \ mol \ CaCl_2(\frac{110.98 \ g \ CaCl_2}{1 \ mol \ CaCl_2} )$ = 588.194 g CaCl₂

Step 4: Check

We are given 2 sig figs. Follow sig fig rules and round.

588.194 g CaCl₂ ≈ 590 g CaCl₂

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3 years ago

Number of moles in 7.8 x 10(at top of 10 like exponent 23) molecules

Anarel [89]

First you need to know Avogadro's number which is 6.02 times 10^23 molecules in 1 mole of a substance. So now just divide your number by Avagadro's number to get the number of moles.

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3 years ago

How much sodium nitrate is in a hotdog?

Sergeu [11.5K]

Answer:

200 ppm

Explanation:

Sodium nitrate is used as a preservative in hotdog to preserve the colour of meat. 200 ppm of sodium nitrate (NaNO3) can be used in a hot dog. A human body can accept 3.7 mg of Sodium nitrate as per kg weight of body. So, excessive use of sodium nitrate in hot dog can harm the human body and produce diseases.

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3 years ago