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
Goshia [24]
3 years ago
11

How are Venus and Earth similar? Group of answer choices They are close in size. They both have plate tectonics. They are about

the same distance from the Sun. They have atmospheres that are mostly carbon dioxide.
Chemistry
1 answer:
pentagon [3]3 years ago
7 0

Answer:

If this is multiple choice it would be: 1. Close in size, and 2. They are about the same distance from the sun.. Hopefully these will help.

You might be interested in
If it requires 75.0mL of 0.500M NaOH to neutralize 165.0 mL of an hcl solution what is the concentration of the hcl solution
Kaylis [27]

Answer:

0.027 M HCl

Explanation:

The chemical equation of the neutralization is:

1 NaOH + 1 HCl -> 1 H2O + 1 NaCl

Because the ratio of NaOH and HCl is 1:1 you can use the M1V1=M2V2 formula.

(75 mL)(0.5 M NaOH) = (165 mL)(M HCl)

It requires 0.027 M HCl.

7 0
3 years ago
How many grams of h2 will be produced if 175g of HCI are allowed to react completely with sodium
Sedbober [7]

Answer:

4.8 grams of H₂ will be produced if 175g of HCI are allowed to react completely with sodium

Explanation:

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) you can see that the following amounts in moles of each compound react and are produced:

  • HCl: 2 moles
  • Na: 1 mole
  • NaCl: 2 moles
  • H₂: 1 mole

You know the following masses of each element:

  • H: 1 g/mole
  • Cl: 35.45 g/mole
  • Na: 23 g/mole

So, the molar mass of each compound participating in the reaction is:

  • HCl: 1 g/mole + 35.45 g/mole= 36.45 g/mole
  • Na: 23 g/mole
  • NaCl: 23 g/mole + 35.45 g/mole= 58.45 g/mole
  • H₂: 2* 1 g/mole= 2 g/mole

Then, by stoichiometry of the reaction, the following amounts in grams of each of the compounds participating in the reaction react and are produced:

  • HCl: 2 moles* 36.45 g/mole= 72.9 g
  • Na: 1 mole* 23 g/mole= 23 g
  • NaCl: 2 moles* 58.45 g/mole= 116.9 g
  • H₂: 1 mole* 2 g/mole= 2 g

So, a rule of three applies as follows: if by stoichiometry, when reacting 72.9 grams of HCl 2 grams of H₂ are formed, when reacting 175 grams of HCl how much mass of H₂ will be formed?

mass of H_{2} =\frac{175 g of HCl*2g ofH_{2} }{72.9 g of HCl}

mass of H₂= 4.8 g

<u><em>4.8 grams of H₂ will be produced if 175g of HCI are allowed to react completely with sodium</em></u>

3 0
3 years ago
Read 2 more answers
What 2 elements that share the same properties and reactivity as the silicon?
VladimirAG [237]
Two elements that have similar properties has silicon would be above or below silicon. they are germanium or antimony. 
   
6 0
3 years ago
What are two observations you made from viewing the solar system model?
oksian1 [2.3K]

Answer:

The two observations we made from viewing the solar system model are as follows as:

1). When we look at the sky we observe that the motions of all the planets and the stars are perfect circular movements with a good and high speed, but not in velocity because in velocity direction doesn't charges.

2). The sun is at the centre of our solar system and all the planets are equidistant to each other planets and also revolve around the sun.

3 0
3 years ago
What problems may global warming cause?
koban [17]

Answer:

Global warming stresses ecosystems through temperature rises, water shortages, increased fire threats, drought, weed and pest invasions, intense storm damage and salt invasion, just to name a few.

Explanation:

Global warming stresses ecosystems through temperature rises, water shortages, increased fire threats, drought, weed and pest invasions, intense storm damage and salt invasion, just to name a few.

6 0
3 years ago
Other questions:
  • Before Mendeleev published his periodic table, Döbereiner grouped elements with similar properties into "triads," in which the u
    6·1 answer
  • The nitrogen and hydrogen atoms that make up ammonia are held together by a
    12·1 answer
  • How <br> do i do math im kinda slow so you might have to speak in spanish for me
    6·2 answers
  • Suppose you fill a glass with ice cubes. When the ice cubes melt, is the glass still full? Explain your answer.
    15·1 answer
  • Which of these statements best describes the relationship difference between minerals and rocks
    15·2 answers
  • Please help me for real
    6·1 answer
  • What factors determine the amount of energy stored in a gummy bear, and how do they affect the amount of energy stored?
    14·1 answer
  • Please help! its science im stuck between two answers
    14·2 answers
  • How much energy is released if a sample loses 0.025 kg mass through<br> radioactive decay?
    7·2 answers
  • 4. Given that 4NH3 + 5O2 4NO + 6H2O, if 4.23 x 1022 molecules NH3 were made to react with an excess of oxygen gas, how many mole
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!