1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alika [10]
3 years ago
6

Will give brainliest to best answer.

Chemistry
1 answer:
Wittaler [7]3 years ago
5 0

Answer:

2. Write balanced nuclear equations for the following situations. For each, be sure to show the parent element, the daughter element, and any particles emitted. For each element, use notation that includes atomic mass and atomic number. (12 points)

a. Actinium-225 decays by alpha decay. (3 points)

225 - 4 = 221, 89 - 2 = 87,  

" 225/89 Ac = 221/87 Fr + 4/2 a "

b. Helium-6 decays by beta decay. (3 points)

neutron=  4-1=3 proton= 2+1=3

" 6/2 He = 6/3 Li + 0/-1 β "

c. Barium-141 and krypton-92 are produced by the bombardment of uranium-235 with a neutron. Complete the reaction:(3 points)

235/92 Ur + 1/0 n = 141/56 Ba + 92/36 Kr ?

d. Deuterium and tritium fuse to form helium-4. (3 points)

2/1 H + 3/1H = 4/2 He + 1/0 n

Explanation:

a p e x, and btw the deuterium and tritium are isotopes of hydrogen, your welcome :)

You might be interested in
What is an example of a risk management strategy
Nat2105 [25]

Answer:

Risk management can be described as the identification and evaluation of certain risks beforehand and the appropriate steps that can be taken to avoid the problematic situations. Risk management is the forecasting of certain risks and the plans made to resist or overcome these risk situations.

An example of a risk management strategy can be a pet owner understanding that he'll have to make major payments for the health of the pet or will have to pay vet bills. In order to save money, the pet owner decided to go for pet insurance beforehand so that any problematic situation can be avoided.

8 0
3 years ago
The salts you tested were held together by ionic bonds. The compounds were made of two types of ions, positive and negative, tha
vladimir1956 [14]

Answer:

A an ionic compound that completely dissolves in water, forming many ions

Explanati

5 0
3 years ago
Read 2 more answers
Calculate the molality, molarity, and mole fraction of FeCl3 in a 29.5 mass % aqueous solution (d = 1.283 g/mL).
faltersainse [42]

Answer:

molality FeCl3= 2.579 molal

molarity FeCl3 = 2.333 M

mol fraction FeCl3 = 0.0444

Explanation:

Step 1: Data given

Mass % = 29.5 %

Density = 1.283 g/mL

Molar mass FeCl3 = 162.2 g/mol

Step 2: Calculate mass solution

Suppose we have 1L = 1000 mL solution

Mass solution = 1.283 g/mL * 1000 mL = 1283 grams

Step 3: Calculate mass FeCl3

Mass FeCl3 = 0.295 * 1283 grams

Mass FeCl3 =  378.485 grams

Step 4: Calculate mass of water

Mass water = 1283 - 378.485 = 904.515 grams

Step 5: Calculate moles FeCl3

Moles FeCl3 = mass FeCl3 / molar mass FeCl3

Moles FeCl3 = 378.485 grams / 162.2 g/mol

Moles FeCl3 = 2.333 moles

Step 6: Calculate moles H2O

Moles H2O = 904.515 grams / 18.02 g/mol

Moles H2O = 50.195 moles

Step 7: Mol fraction FeCl3

Mol fraction FeCl3 = 2.333 / (50.195+2.333)

Mol fraction FeCl3 =   0.0444

Step 8: Calculate molality

Molality = moles FeCl3 / mass H2O

Molality = 2.333 moles / 0.904515 kg

Molality = 2.579 molal

Step 9: Calculate molarity

Molarity = moles / volume

Molarity FeCl3 = 2.333 moles / 1 L

Molarity FeCl3 = 2.333 M

8 0
3 years ago
HELPPP which one has four energy levels Si, Ge, or Sn???
vaieri [72.5K]

Answer:

Ge

Explanation:

pretty sure im on high school 12th

8 0
3 years ago
BRANILIESTTT ASAP!! PLEASE HELP ME :)
Svet_ta [14]

Answer:

As temperature increases, the molecules and atoms move faster.

Explanation:

Molecules and atoms move according to how hot or cold the temperature is. As the temperature rises, the molecules and atoms will begin to move faster. As the temperature cools, the molecules and atoms will begin to move slower.

Hope this helps! :)

3 0
3 years ago
Other questions:
  • 4. What is the difference between an open system and a<br> closed system?
    14·1 answer
  • Before raw data can be used as scientific evidence, it must be analyzed and summarized. One way of summarizing data is to find t
    11·1 answer
  • What would you predict about a chemical that has a hydrogen ion concentration of 1 × 10^−12 M?
    12·2 answers
  • Alice and Marge are studying the properties of matter. The girls cut some silver-colored magnesium sheets into 3-inch long strip
    12·2 answers
  • New substances formed during a chemical reaction are indicated -
    9·1 answer
  • A rectangle solid of unknown density is 5 m long two meters high and 4 meters wide. The mass of this solid is 300 grams. Find th
    12·1 answer
  • 3. Which type of pitch do you think was
    15·1 answer
  • When is expressing numbers using scientific notation useful?
    10·1 answer
  • A chemical reaction produces 13.8 mol of CO What volume in liters will that gas occupy at STP
    11·1 answer
  • If the order of a reaction with the regard to reagent A is 2, when the concentration of A doubles, the rate will
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!