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AnnZ [28]
3 years ago
15

Which of the following must be the same for two isotopes of an element? A. The number of neutrons B. The atomic number C. The ma

ss D. The charge
Answer is The atomic number
Chemistry
2 answers:
ASHA 777 [7]3 years ago
8 0
B. The atomic number. This is because the atomic number is the same as the number of protons an element has, and the number of protons defines an element.
Lana71 [14]3 years ago
7 0

Answer: B. The atomic number

Explanation:

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I WILL GIVE BRAINLIEST ANSWER IN 5 MINS
snow_lady [41]

Physical Properties: Sodium bicarbonate is an odorless, white crystalline solid or fine powder. It has a slightly alkaline taste. Its density is 2.20 g mL-1 and it decomposes in temperatures above 50 ºC. The decomposition yields to sodium carbonate. It is highly soluble in water and poorly soluble in acetone and methanol. It is insoluble in ethanol.

Chemical Properties: Sodium bicarbonate is an amphoteric compounds, it means the compound has a character acids an basic at the same time.  It is highly soluble in water, resulting in a slighty alkaline solution.


i hope this part helps i will continue to research on Toothpaste's properties

6 0
3 years ago
When Luis burns wood in a campfire, the particles in the wood break down and energy is released. What type of energy does the wo
matrenka [14]

Answer:

chemical energy is stored in the wood before combustion.

8 0
3 years ago
Question 2 (0 points)
bazaltina [42]

Answer:

The probability  of spinning red with the spinner or rolling an odd number with the  die is \dfrac{1}{8}

Explanation:

Given that,

Total color in spinner = 4

Let the area of four parts is equal in the spinner.

We need to calculate the probability of spinning red

Using formula of probability

P(A) = \dfrac{Number\ of\ red\ color\ outcome}{Total\ number\ of\ colors\ in\ the\ spinner}

Put the value into the formula

P(A)=\dfrac{1}{4}

We need to calculate the probability of odd number of the die

Using formula of probability

P(B) = \dfrac{Number\ of\ odd\ digits\ outcome}{Total\ number\ of\ digits\ in\ the\ die}

Put the value into the formula

P(B)=\dfrac{3}{6}

P(B)=\dfrac{1}{2}

We need to calculate the probability  of spinning red with the spinner or rolling an odd number with the  die

Using formula of probability of two events which is independent

P(A\ and\ B)=P(A)\times P(B)

Put the value into the formula

P(A\ and\ B)=\dfrac{1}{4}\times\dfrac{1}{2}

P(A\ and\ B)=\dfrac{1}{8}

Hence, The probability  of spinning red with the spinner or rolling an odd number with the  die is \dfrac{1}{8}

5 0
3 years ago
What is the molar mass of h2
alekssr [168]

Answer:

The answer is one

Explanation:

I will just type any rubbish here bcuz my answer should be more than 20 words..... Just know the answer is 1

3 0
3 years ago
8. What is diabetes?
Ghella [55]

Answer:

Diabetes is a disease that occurs when your blood glucose, also called blood sugar, is too high. Blood glucose is your main source of energy and comes from the food you eat. Insulin, a hormone made by the pancreas, helps glucose from food get into your cells to be used for energy. Sometimes your body doesn’t make enough—or any—insulin or doesn’t use insulin well. Glucose then stays in your blood and doesn’t reach your cells.

Over time, having too much glucose in your blood can cause health problems. Although diabetes has no cure, you can take steps to manage your diabetes and stay healthy.

6 0
3 years ago
Read 2 more answers
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