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GarryVolchara [31]
2 years ago
6

Ldentify the atom whose nucleus is composed of 56 protons and 82 neutrons.

Chemistry
1 answer:
kenny6666 [7]2 years ago
4 0

Answer:

Barium-138

Explanation:

The mass number is the atomic number + the number of neutrons. ... Identify the atom whose nucleus is composed of 56 protons and 82 neutrons. Barium-138 (the number of protons identifies the atom) Gallium has two naturally occurring isotopes: Ga-69 with a mass of 68.9256 amu and a natural abundance of 60.11% and Ga-71.

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What is the engine piston displacement in liters of an engine whose displacement is listed as 490 in^3?
marishachu [46]

Answer:

490 in^3 = 8.03 L

Explanation:

Given:

The engine displacement = 490 in^3

= 490 in³

To determine the engine piston displacement in liters L;

(NOTE: Both in^3 (in³) and L are units of volume). Hence, to find the engine piston displacement in liters (L), we will convert in^3 to liters (L)

First, we will convert in³ to cm³

Since 1 in = 2.54 cm

∴ 1 in³ = 16.387 cm³

If 1 in³ = 16.387 cm³

Then 490 in³ =  (490 in³ × 16.387 cm³) / 1 in³ = 8029.63 cm³

∴ 490 in³ = 8029.63 cm³

Now will convert cm³ to dm³

(NOTE: 1 L = 1 dm³)

1 cm = 1 × 10⁻² m = 1 × 10⁻¹ dm

∴ 1 cm³ = 1 × 10⁻⁶ m³ = 1 × 10⁻³ dm³

If 1 cm³ = 1 × 10⁻³ dm³

Then, 8029.63 cm³ = (8029.63 cm³ × 1 × 10⁻³ dm³) / 1 cm³ = 8.02963 dm³

≅ 8.03 dm³

∴ 8029.63 cm³ = 8.03 dm³

Hence, 490 in³ = 8029.63 cm³ = 8.03 dm³

Since 1L = 1 dm³

∴ 8.03 dm³ = 8.03 L

Hence, 490 in³ = 8.03 L

3 0
3 years ago
What is often mistakenly regarded as being based on science?
photoshop1234 [79]
Unless you are talking about one specific theory, the answer is pseudoscience.
3 0
3 years ago
As water is cooled from 4º C to 0°C, its density
frosja888 [35]

Answer:

decreases

Explanation:

3 0
4 years ago
What is the electron configuration for S-
Sonbull [250]

Answer:

The Electron Configuration for Sulfur(S)= 1s^2  2s^2  2p^6  3s^2  3p^4

Explanation:

Use the sheet attached to help with a future question. (Hint: Follow the red lines). The atomic number will be equal to the number of powers raised.

4 0
4 years ago
How many significant digits are in the number 1.0 × 10^3?​
Galina-37 [17]
121837481817381813727-
6 0
3 years ago
Read 2 more answers
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