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
34kurt
4 years ago
8

Match the following. 1. an ancient study or art which attempted to combine science and philosophy to solve worldly problems atom

2. a homogeneous mixture of elements with metals to form metallic solids metal 3. the simplest unit of an element that still retains the properties of that element alchemy 4. two or more elements joined together such that the elements have lost their individual identity element 5. a primary substance that cannot be divided into separate substances nonmetal 6. the group of elements that are good conductors of electricity and heat compound 7. the group of elements that are poor conductors of electricity and heat alloy.
Chemistry
1 answer:
Zinaida [17]4 years ago
7 0

Answer:

1. An ancient study or art which attempted to combine science and philosophy to solve worldly problems Alchemy

2. A homogeneous mixture of elements with metals to form metallic solids Alloy.

3. The simplest unit of an element that still retains the properties of that element compound Atom

4. Two or more elements joined together such that the elements have lost their individual identity Compound

5. A primary substance that cannot be divided into separate substances element Element.

6. The group of elements that are good conductors of electricity and heat Metals

7 . The group of elements that are poor conductors of electricity and heat Non metal

You might be interested in
The picture below shows a sample from a tree.<br> What kind of tree is this?
HACTEHA [7]

Answer:

I believe it is Spruce, because of the shape of the leaves

7 0
3 years ago
Read 2 more answers
2 of the important properties of gases. SaveStylesFormat Instructions
lyudmila [28]
Gases have three characteristic properties: (1) they are easy to compress<span>, (2) they expand to </span>fill<span> their containers, and (3) they occupy far more space than the liquids or solids from which they form. An internal</span>combustion engine<span> provides a good example of the ease with which gases can be compressed.</span>
6 0
4 years ago
Suppose you will determine the composition of the unknown substance that was collected at the scene of the crime. You are encour
maria [59]

Answer:

b   erergart

Explanation:

6 0
3 years ago
A sample of ammonia ^NH3h gas is completely decomposed to nitrogen and hydrogen gases over heated iron wool. If the total pressu
icang [17]

Answer : The partial pressure of N_2 and H_2 is, 216.5 mmHg and 649.5 mmHg

Explanation :

According to the Dalton's Law, the partial pressure exerted by component 'i' in a gas mixture is equal to the product of the mole fraction of the component and the total pressure.

Formula used :

p_i=X_i\times p_T

X_i=\frac{n_i}{n_T}

So,

p_i=\frac{n_i}{n_T}\times p_T

where,

p_i = partial pressure of gas

X_i = mole fraction of gas

p_T = total pressure of gas

n_i = moles of gas

n_T = total moles of gas

The balanced decomposition of ammonia reaction will be:

2NH_3\rightarrow N_2+3H_2

Now we have to determine the partial pressure of N_2 and H_2

p_{N_2}=\frac{n_{N_2}}{n_T}\times p_T

Given:

n_{N_2}=1\\\\n_{H_2}=3\\\\n_{T}=4\\\\p_T=866mmHg

p_{N_2}=\frac{1}{4}\times (866mmHg)=216.5mmHg

and,

p_{H_2}=\frac{n_{H_2}}{n_T}\times p_T

Given:

n_{H_2}=1\\\\n_{H_2}=3\\\\n_{T}=4\\\\p_T=866mmHg

p_{H_2}=\frac{3}{4}\times (866mmHg)=649.5mmHg

Thus, the partial pressure of N_2 and H_2 is, 216.5 mmHg and 649.5 mmHg

5 0
4 years ago
In Part A, we saw that the theoretical yield of aluminum oxide is 0.800 mol . Calculate the percent yield if the actual yield of
MAVERICK [17]
Percent Yield is the actual practical yield of a certain chemical reaction. It is always less than the theoretical yield calculated due to human handling and error.

Percent Yield = (Actual yield / theoretical yiield) * 100 = (0.456 / 0.800) * 100 = 57%

The yield here is small which means a bad handling and high error.
6 0
4 years ago
Read 2 more answers
Other questions:
  • An arctic weather balloon is filled with 27.8 L of helium gas inside a prep shed. The temperature inside the shed is . The ballo
    5·1 answer
  • Please ignore my answers because they are wrong.
    8·1 answer
  • I need help with Number 61 please
    9·1 answer
  • In each cycle of a Carnot engine, 104 J of heat is absorbed from the high-temperature reservoir and 51 J is exhausted to the low
    8·1 answer
  • Several constructive processes helped build mountains on Earth. All BUT one of these is a way mountains can be built. That is A)
    12·1 answer
  • Identify the atom that increases in oxidation number in the following redox reaction. 2MnO2 +2K2CO3 + O2?2KMnO4 +2CO2
    5·1 answer
  • Determine the total number of valence electrons in the arsenite ion, aso33−.
    6·1 answer
  • Please give me a clear message on what to do.<br> how do you change your brainly username?
    14·2 answers
  • The difference in arrival times for P- and S-waves from an earthquake is 5.0 minutes. According to the Earth Science Reference T
    8·1 answer
  • Where is Earth's heat energy most concentrated?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!