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
2 years ago
14

True or false

Chemistry
1 answer:
8090 [49]2 years ago
5 0
1) false, they can’t
2) false, algae produces oxygen and are a source of food for other organisms
You might be interested in
The nucleus of an element contains more protons then electrons.this is referred to a?
dedylja [7]

Answer:

ion

However atoms may gain or lose electrons in ordinary chemical reactions. If an atom has the same number of electrons as protons, it is a neutral atom. If it has a net charge, (more or less electrons than protons) it is an ion. If it has more electrons than protons it has a net negative charge and is known as an anion.

Explanation:

3 0
3 years ago
Sodium metal reacts with chlorine gas to produce sodium chloride. What mass (grams) of sodium metal would be needed to fully rea
gulaghasi [49]

Answer:

105.8 g of Na would be required

Explanation:

Let's think the reaction:

2Na(s)  + Cl₂(g)  →  2NaCl (s)

1 mol of chlorine reacts with 2 moles of sodium

Then, 2.3 moles of Cl₂ would react with (2.3 .2) / 1 = 4.6 moles

Let's determine the mass of them.

4.6 mol . 23 g/mol = 105.8 g

3 0
3 years ago
Einstein’s Theory of Relativity was built on the research and ideas of other scientists. The Theory of Relativity proposes that
dezoksy [38]
Einstein’s Theory of Relativity was built on the research and ideas of other scientists. The Theory of Relativity proposes that the speed of light is aconstant. The statement that explains why this is considered to be a scientific theory is that the majority of the scientific community voted on this theory over other possible explanations.

6 0
3 years ago
Read 2 more answers
A rock has a density of 3.75g/cm3 and a mass of 26g. What is the volume of the rock?
Lemur [1.5K]

Answer:

<h3>The answer is 6.93 cm³</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}  \\

From the question we have

volume =  \frac{26}{3.75}  \\  = 6.93333333...

We have the final answer as

<h3>6.93 cm³</h3>

Hope this helps you

8 0
3 years ago
What is the mass number of an atom that has 12 neutrons and 11 protons?
Tamiku [17]
Mass number = protons + neutrons. 12 + 11 = 23.
5 0
3 years ago
Read 2 more answers
Other questions:
  • When Sulphur dioxide reacts with water the product formed is
    8·2 answers
  • How many kilograms are in 6.983 moles of baking soda (NaCHO3)?
    14·1 answer
  • What is a potential risk of genetically modified food?
    13·2 answers
  • The mineral vanadinite has the formula pb5(vo4)3cl. what mass percent of chlorine does it contain?
    12·1 answer
  • Answer:
    9·2 answers
  • When ammonium nitrate is added to a suspension of magnesium hydroxide in water, the Mg(OH)2 dissolves. Write a net ionic equatio
    10·1 answer
  • Sodium hydride reacts with excess water to produce aqueous sodium hydroxide and hydrogen gas:NaH (s) H2O (l) → NaOH (aq) H2 (g)A
    7·2 answers
  • What role doe ionic compounds play in our bodies?
    7·1 answer
  • A group of students are studying how different stimuli affect the growth of plants. They place a growth lamp next to a plant tha
    6·1 answer
  • A change of state does not affect an object's what?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!