Name the region of the atom where protons and neutrons are located.

If you combined neon argon and helium together what would you expect to happen

olya-2409 [2.1K]

All of these elements are Noble gases, so nothing really has to happen. All of them very non-reactive.

8 0

4 years ago

What is the empirical formula of vitamin A ( C=83.85, H=10.56, O=5.58)<br>

ladessa [460]

The empirical formula of vitamin A : C₂₀H₃₀O

<h3>Further explanation </h3>

The empirical formula is the smallest comparison of atoms of compound =mole ratio of the components

The principle of determining empirical formula

Determine the mass ratio of the constituent elements of the compound.
Determine the mole ratio by dividing the percentage by the atomic mass

mol ratio of C : H : O ⇒

$\tt \dfrac{83.85}{12}\div \dfrac{10.56}{1}\div \dfrac{5.58}{16}\\\\6.9875\div 10.56\div 0.34875\rightarrow divide~by~smallest(0.34875)\\\\20\div 30\div 1$

5 0

3 years ago

Which term names a metamorphic change in rocks over a wide area from tectonic forces in Earth's crust and mantle? A. local metam

Pavlova-9 [17]

D is the answer. A, B,C are absurd. Doing a little word right there.

8 0

3 years ago

Read 2 more answers

The center on your school’s basketball team is 6 ft 10 in tall. How tall is the player in millimeters (mm)?

svp [43]

The answer is 6 ft 10 inches in millimeters (mm) is 0.833 ft.

Given,

The center of the school's basketball team is 6 ft 10 inches tall.

We have to convert the height of the player from feet and inches to feet.

Using the conversion factor,

1 ft = 12 inches

or, 12inches/ 1 ft

Converting 6ft 10 inches to ft, we get;

10 inches × 1 ft/ 12inches

= 0.833 ft

Therefore 6 ft 10 inches in millimeters (mm) is 0.833 ft.

Unit conversion is a method in which we multiply or divide with a particular numerical factor and then finally round off to the nearest significant digits.

To learn more about Millimeter and Unit conversions, visit: brainly.com/question/26371870

#SPJ4

5 0

2 years ago

What is the final acetate ion concentration when 69. g Ba(C2H3O2)2 is dissolved in enough water to make 970. mL of solution? The

mario62 [17]

Answer:

0.56M of acetate ions

Explanation:

Given parameters:

Mass of Ba(C₂H₃O₂)₂ = 69g

Volume of water = 970mL = 0.97dm³

Molar mass of Ba(C₂H₃O₂)₂ = 255.415g/mol

Unknown:

Concentration of acetate ion in the final solution = ?

Solution:

Let us represent the dissociation;

Ba(C₂H₃O₂)₂ = Ba²⁺ + 2C₂H₃OO⁻

We see that 1M of will produce 2M of acetate ions

Now, let us find the molarity of the barium acetate;

Molarity = $\frac{number of moles }{volume}$

Number of moles of Ba(C₂H₃O₂)₂ = $\frac{mass}{molar mass}$

Number of moles = $\frac{69}{255.415}$ = 0.27moles

Molarity of Ba(C₂H₃O₂)₂ = $\frac{0.27}{0.97}$ = 0.28M

since 1M of Ba(C₂H₃O₂)₂ will produce 2M of acetate ions

0.28M of Ba(C₂H₃O₂)₂ will produce 2 x 0.28 = 0.56M of acetate ions

3 0

4 years ago