4 years ago

What is the number after an elements name, representing the sum of its protons and neutrons

Chemistry

2 answers:

victus00 [196]4 years ago

7 0

The atomic mass number is what you are describing in your question.

vagabundo [1.1K]4 years ago

6 0

The answer is electrons

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A block has 73 kg is being pushed and accelerated at rate of 10 m/s. what force is being applied to the block?

ki77a [65]

Answer:

730 N

Explanation:

force =mass×acceleration

force= 73kg × 10 m/s

f=730N

8 0

3 years ago

How many grams of sodium hyrdioxde are in 251.0ml f 0.600m

Furkat [3]

Answer:

There are 6.024 grams of sodium hydroxide in the solution.

Explanation:

$Molarity=\frac{Moles}{Volume (L)}$

$Moles (n)=Molarity(M)\times Volume (L)$

Moles of sodium hydroxide = n

Volume of sodium hydroxide solution = 251.0 mL = 0.251 L

Molarity of the sodium hydroxide = 0.600 M

$n=0.600 M\times 0.251 L=0.1506 mol$

Mass of 0.1506 moles of NaOH :

$40 g/mol\times 0.1506 mol = 6.024 g$

There are 6.024 grams of sodium hydroxide in the solution.

4 0

3 years ago

How many moles of sodium chloride (NaCl) solute are in 155 grams of an 88.5 percent by mass solution?

Reil [10]

Its going to be 2.27 mol NaCl

5 0

4 years ago

HELPP ASAP I’ll mark you as brainlister 100 points :((((

Aleksandr [31]

Answer:

the pool table one

Explanation:

cuz gas just goes EVERYWHERE

4 0

3 years ago

Of the following pairs of atoms, which is the more electronegative? Cl or I

Sonbull [250]

Answer:

Chlorine is more electronegative than iodine. The electronegativity of chlorine is 3.16. The electronegativity of iodine is 2.66.

8 0

2 years ago