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
posledela
3 years ago
6

Which element has the highest melting point? ​

Chemistry
2 answers:
sammy [17]3 years ago
8 0

Answer:

tungsten

Explanation:

the chemical with the highest melting point is tungsten, element 74, with a melting point of 6,192.

Nadya [2.5K]3 years ago
4 0

The chemical element with the highest melting point is tungsten, at 3,414 °C.

You might be interested in
_______ is the amount of heat necessary to raise the temperature of 1 gram of a substance by 1 degree Kelvin. A. A calorie B. En
Maksim231197 [3]
<h2>The required option d) "specific heat" is correct.</h2>

Explanation:

  • To raise the temperature of any substance or material of certain mass to respective temperature it requires some amount of heat.
  • Specific heat is the amount of heat necessary to raise the temperature of the substance of 1 gram to 1 Kelvin.
  • It is the amount of heat which is required to raise the temperature per unit mass to per unit temperature.
  • Thus, the required "option d) specific heat" is correct.
5 0
3 years ago
If a wave has a frequency of 2.85x10^10 its wavelength is ?
Ede4ka [16]

Answer:

tepo jds fnsdmv dfjv dfj pvjdf ifjv dfjv sdijghdfuiExplanation:

3 0
3 years ago
When CO2(g) is put in a sealed container at 730 K and a pressure of 10.0 atm and is heated to 1420 K , the pressure rises to 24.
d1i1m1o1n [39]

Answer:

48%

Explanation:

Based on Gay-Lussac's law, the pressure is directly proportional to the temperature. To solve this question we must assume the temperature increases and all CO2 remains without reaction. The equation is:

P1T2 = P2T1

<em>Where Pis pressure and T absolute temperature of 1, initial state and 2, final state of the gas:</em>

P1 = 10.0atm

T2 = 1420K

P2 = ?

T1 = 730K

P2 = 10.0atm*1420K / 730K

P2 = 19.45 atm

The CO2 reacts as follows:

2CO2 → 2CO+ O2

Where 2 moles of gas react producing 3 moles of gas

Assuming the 100% of CO2 react, the pressure will be:

19.45atm * (3mol / 2mol) = 29.175atm

As the pressure rises just to 24.1atm the moles that react are:

24.1atm * (2mol / 19.45atm) = 2.48 moles of gas are present

The increase in moles is of 0.48 moles, a 100% express an increase of 1mol. The mole percent that descomposes is:

0.48mol / 1mol * 100 = 48%

8 0
3 years ago
Convert 8.876 × 10^12 m^2 to units of km^2.
Darya [45]

Answer:

8.876\times 10^{18}\ km^2

Explanation:

In this problem, we need to convert 8.876 \times 10^{12}\ m^2 to km².

We know that,

1 km = 1000 m

⇒ 1 km² = 10⁶ m²

So,

8.876 \times 10^{12}\ m^2=8.876 \times 10^{12}\times 10^6\ km^2\\\\=8.876\times 10^{18}\ km^2

So, 8.876 \times 10^{12}\ m^2 is equal to 8.876\times 10^{18}\ km^2.

7 0
3 years ago
Which statement describes how an atom in the ground state becomes excited
Marysya12 [62]
The ground<span> state of an electron, the energy level it normally occupies, is the state of lowest energy for that electron. ... An electron </span>can become excited<span> if it is given extra energy, such as if it absorbs a photon, or packet of light, or collides with a nearby </span>atom<span> or particle. (I do not take credit for that answer)</span>
4 0
3 years ago
Other questions:
  • A compound with the empirical formula ch2 has a molar mass of 98 g/mol what is the molecular formula for this compound ?
    13·1 answer
  • What volume (cm​ 3​ ) would 9.0 grams of aluminum occupy? Density is 2.7 g/cm​ 3​ . Show your work
    11·1 answer
  • . A sample of crude oil has a density of 0.87 g/mL. What volume (in liters) does a 3.6 kg sample of this oil occupy
    5·1 answer
  • If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the struct
    11·2 answers
  • Pressure of gas in kilopascals
    11·1 answer
  • Scientists carried out an experiment with flowers from plant X and found out that within three minutes of exposure to the sound
    14·1 answer
  • Set goals and objectives for a company
    11·1 answer
  • Name of 2 elements with their symbols derived from its german name
    15·1 answer
  • At 25◦C a 4 L sample of H2 exerts a pressure of 5 atm. What pressure would the same sample exert in a 2 L container at 25◦C?
    8·1 answer
  • B. How do you think the physical properties (strength, flexibility, and viscosity) of the polymer would change if more borate ha
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!